R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3...
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R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ...
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ISBN: 978-0495113690
7th Edition
Authors: Raymond A. Serway, Jerry S. Faughn, Chris Vuille, Charles A. Bennett
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(a) Find the equivalent resistance of the circuit in figure.(b) If the total power supplied to the circuit is 4.00 W, find the emf of thebattery. 10.0 N 4.00 N 5.00 2 3.00 N 3.00 N
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4. In St. Albert, Alberta, there are two bakers, Anderson and Carlson. Anderson's bread tastes just like Carlson's. Anderson has average costs of $1 per loaf of bread. Carlson has average costs of $2...
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Justify the rule of universal modus tollens by showing that the premises x(P(x) Q(x)) and Q(a) for a particular element a in the domain, imply P(a).
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Consider the marginal cost curve associated with cleaning your dorm room. Label the vertical axis time and the horizontal axis percent clean. What would this marginal cost curve look like?
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Parkside Retails account balances are shown below. Prepare an income statement under the perpetual inventory system for the year ended 30 June 2025. Cost of sales $237 700 Inventory, 30 June 2025 28...
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At year- end (December 31), Chan Company estimates its bad debts as 0.5% of its annual credit sales of $ 975,000. Chan records its Bad Debts Expense for that estimate. On the following February 1,...
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Which one of the metal atoms whose electronic structure given below forms a nitrate of the type M(NO3)2? 37 A. 2.8.0 B. 2.8.1 C. 2.8.2 D. 2.8.3
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You noticed how popular recreational and high school hockey was in the county. There were no hockey supply stores around, so you opened one. Which strategy will actually "kill" your business? Select...
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How to insert "try - catch" in the below code: import java.util.ArrayList; import java.util.List; import java.util.Queue; import java.util.Set; // The Jukebox class represents the body of the...
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QUESTION 2 60 MARKS Required: Given the following THREE (3) classes (found on the Edstem platform) - IceCream, Milkshake, and Waffle: a) Log into the learning platform edstem.org; navigate to:...
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Organic Functional Groups Predicting the products of amide hydrolysis Predict the products of this organic reaction: CH3 -C-OH + KOH Specifically, in the drawing area below draw the structure of t...
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In your own words, describe in two or three sentences what your main takeaway was from the discussion on the outcomes model. In a second paragraph, explain in a sentence or two why the question "What...
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(3) [25 Points] Consider the linked list provided below: 2>3 Here the 1>7>5> 18 > NULL symbol means a pointer. Write a complete Python program which deletes the third last node of the list and...
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Suppose that the firm's production function is q = LK. In the short run the amount of capital is fixed at K = 9. How much labor (L) is needed to produce 60 units per day?
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Multiples valuation should be forward looking, so start with Nvidia's 2024 projected Earnings Before Interest, Taxes, Depreciation and Amortization (EBITDA, a standard cash flow measure) and compute...
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Suppose you won a financial literacy competition and are given FJS10000 to invest, with the condition that investment can be done either in, i) Invest in Unit trust of Fiji or Invest in Fijian...
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An electron moving horizontally passes between two horizontal plates, the upper charged negatively, the lower positively. A uniform, upward-directed electric eld exists in the region between the...
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A ray of light strikes the midpoint of one face of an equiangular (606060) glass prism (n = 1.5) at an angle of incidence of 30. (a) Trace the path of the light ray through the glass, and find the...
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A light ray enters a rectangular block of plastic at an angle θ1 = 45.0° and emerges at an angle θ2 = 76.0°, as shown in figure. (a) Determine the index of...
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Explain why it is acceptable to estimate reduced-form equations by least squares.
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Our aim is to estimate the parameters of the simultaneous equations model We assume that \(x_{1}\) and \(x_{2}\) are exogenous and uncorrelated with the error terms \(e_{1}\) and \(e_{2}\). a. Solve...
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Describe the two-stage least squares estimation procedure for estimating an equation in a simultaneous equations model, and explain how it resolves the estimation problem for least squares.
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