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physics
electricity and magnetism

Questions and Answers of Electricity and Magnetism

Find i1 through i4 in the circuit in Fig. 2.96?
Obtain v and i in the circuit in Fig. 2.97?
Using series/parallel resistance combination, find the equivalent resistance seen by the source in the circuit of Fig. 2.98. Find the overall dissipated power?Figure 2.98 For Prob. 2.34.
Calculate V0 and I0 in the circuit of Fig. 2.99?
Find i and Vo in the circuit of Fig. 2.100.Figure 2.100 For Prob. 2.36.
Find Req and io in the circuit of Fig. 2.102.Figure 2.102 For Prob. 2.38
Evaluate Req for each of the circuits shown in Fig. 2.103.(a)(b)
If Req = 50 Ω in the circuit in Fig. 2.105, find R?
Reduce each of the circuits in Fig. 2.106 to a single resistor at terminals a-b?
Calculate the equivalent resistance Rab at terminals a-b for each of the circuits in Fig.2.107?
For each of the circuits in Fig. 2.108, obtain the equivalent resistance at terminals a-b.Figure 2.108
Find the equivalent resistance at terminals a-b of each circuit in Fig. 2.109.Figure 2.109
Find the equivalent resistance Rab in the circuit of Fig. 2.111?
Convert the circuits in Fig. 2.112 from Y to Δ?
Transform the circuits in Fig. 2.113 from ( to Y?
What value of R in the circuit of Fig. 2.114 would cause the current source to deliver 800 mW to the resistors?
Obtain the equivalent resistance at the terminals a-b for each of the circuits in Fig. 2.115?
For the circuit shown in Fig. 2.116, find the equivalent resistance. All resistors are 1Î©.Figure 2.116 For Prob. 2.52.
Obtain the equivalent resistance Rab in each of the circuits of Fig. 2.117. In (b), all resistors have a value of 30 Ω?
Consider the circuit in Fig. 2.118. Find the equivalent resistance at terminals: (a) a-b, (b) c-d.Figure 2.118
Calculate I0 in the circuit of Fig. 2.119?
Determine V in the circuit of Fig. 1.120?
Find Req and I in the circuit of Fig. 2.121?
The lightbulb in Fig. 2.122 is rated 120 V, 0.75 A. Calculate Vs to make the lightbulb operate at the rated conditions?
If the three bulbs of Prob. 2.59 are connected in parallel to the 100-V battery, calculate the current through each bulb?
As a design engineer, you are asked to design a lighting system consisting of a 70-W power supply and two lightbulbs as shown in Fig. 2.124. You must select the two bulbs from the following three
If an ammeter with an internal resistance of 100 Ω and a current capacity of 2 mA is to measure 5 A, determine the value of the resistance needed. Calculate the power dissipated in the shunt
The potentiometer (adjustable resistor) Rx in Fig. 2.126 is to be designed to adjust current Ix from 1 A to 10 A. Calculate the values of R and Rx to achieve this?
A 20-kΩ/V voltmeter reads 10 V full scale, (a) What series resistance is required to make the meter read 50 V full scale? (b) What power will the series resistor dissipate when the meter reads full
(c) Obtain the voltage vo in the circuit of Fig. 2.127.(d) Determine the voltage v'o measured when a voltmeter with 6-kÎ© internal resistance is connected as shown in Fig. 2.127.(e) The
(f) Find the current i in the circuit of Fig. 2.128(a).(g) An ammeter with an internal resistance of 1 Î© is inserted in the network to measure i' as shown in Fig. 2.128 (b). What is
A voltmeter is used to measure Vo in the circuit in Fig. 2.122. The voltmeter model consists of an ideal voltmeter in parallel with a 100-kΩ resistor. Let Vs = 40 V, Rs = 10 kΩ, and R1 = 20 kΩ.
(a) Consider the Wheatstone Bride shown in Fig. 2.130. Calculate va, vb, and(b) Rework part (a) if the ground is placed at a instead of o.Figure 2.130
Figure 2.131 represents a model of a solar photovoltaic panel. Given that vs = 30 V, R1 = 20 Î©, IL = 1 A, find RL.Figure 2.131
Find Vo in the two-way power divider circuit in Fig. 2.132.Figure 2.132 For Prob. 2.72.
The circuit in Fig. 2.134 is to control the speed of a motor such that the motor draws currents 5 A, 3 A, and 1 A when the switch is at high, medium, and low positions, respectively. The motor can be
Find Zab in the four way power divider circuit in Fig. 2.135. Assume each element is 1(.Figure 2.135 For Prob. 2.75.
Suppose your circuit laboratory has the following standard commercially available resistors in large quantities:Using series and parallel combinations and a minimum number of available resistors, how
In the circuit in Fig. 2.137, the wiper divides the potentiometer resistance between Î±R and (1 - Î±)R, 0 ‰¤ Î± ‰¤ 1. Find vo /
An electric pencil sharpener rated 240 mW, 6 V is connected to a 9-V battery as shown in Fig. 2.138. Calculate the value of the series-dropping resistor Rx needed to power the sharpener.Figure 138
Use KCL to obtain current i1, i2 and i3 in the circuit shown in Fig. 2.72?
A loudspeaker is connected to an amplifier as shown in Fig. 2.139. If a 10-Î© loudspeaker draws the maximum power of 12 W from the amplifier, determine the maximum power a 4-Î©
In a certain application, the circuit in Figure 2.140 must be designed to meet these to criteria:(a) Vo/Vs = 0.5(b) Req = 40 k(If the load resistor 5 k( is fixed, find R1 and R2 to meet the criteria?
The pin diagram of a resistance array is shown in Fig. 2.141. Find the equivalent resistance between the following: (a) 1 and 2 (b) 1 and 3 (c) 1 and 4?
Two delicate devices are rated as shown in Fig. 2.142. Find the values of the resistors R1 and R2 needed to power the devices using a 24-V battery?
Find i1, i2, and i3 in Fig. 2.73.Figure 2.73 for Prob. 2.9.
Determine Ix in the circuit shown in Fig. 3.50 using nodal analysis.Figure 3.50 For Prob. 3.1
Find i0 in the circuit in Fig. 3.59.Figure 3.59
Find Vo and the power dissipated in all the resistors in the circuit of Fig. 3.60.Figure 3.60 For Prob. 3.11
Using nodal analysis, determine Vo in the circuit in Fig. 3.61.Figure 3.61 For Prob. 3.12.
Calculate v1 and v2 in the circuit of Fig. 3.62 using nodal analysis.Figure 3.62
Using nodal analysis, find vo in the circuit of Fig. 3.63.Figure 3.63
Apply nodal analysis to find io and the power dissipated in each resistor in the circuit of Fig. 3.64.Figure 3.64
Determine voltages v1 through v3 in the circuit of Fig. 3.65 using nodal analysis.Figure 3.65
Using nodal analysis, find current io in the circuit of Fig. 3.66?Figure 3.66
Determine the node voltages in the circuit in Fig. 3.67 using nodal analysis.Figure 3.67
Use nodal analysis to find v1, v2, and v3 in the circuit in Fig. 3.68.Figure 3.68
For the circuit in Fig. 3.51, obtain v1 and v2.Figure 3.51
For the circuit in Fig. 3.69, find v1, v2, and v3 using nodal analysisFigure 3.69
For the circuit in Fig. 3.70, find v1 and v2 using nodal analysis.Figure 3.70
Determine v1 and v2 in the circuit in Fig. 3.71.Figure 3.71
Use nodal analysis to find Vo in the circuit of Fig. 3.72.Figure 3.72 For Prob. 3.23.
Use nodal analysis and MATLAB to find Vo in the circuit in Fig. 3.73.Figure 3.73 For Prob. 3.24
Use nodal analysis along with MATAB to determine the node voltages in Fig. 3.74?Figure 3.74 For Prob. 3.25.
Calculate the node voltages v1, v2, and v3 in the circuit of Fig. 3.75.Figure 3.75
Use nodal analysis to determine voltages v1, v2, and v3 in the circuit Fig. 3.76.Figure 3.76
Use MATLAB to find the voltages at nodes a, b, c, and d in the circuit of Fig. 3.77.Figure 3.77
Use MATLAB to solve for the node voltages in the circuit of Fig. 3.78.Figure 3.78
Find the currents i1 through i4 and the voltage vo in the circuit in Fig. 3.52.Figure 3.52
Using nodal analysis, find vo and io in the circuit of Fig. 3.79.Figure 3.79
Find the node voltages for the circuit in Fig. 3.80.Figure 3.80.
Obtain the node voltages v1, v2, and v3 in the circuit of Fig. 3.81?
Which of the circuits in Fig. 3.82 is planar? For the planar circuit, redraw the circuits with no crossing branches.(a)(b) Figure 3.82
Determine which of the circuits in Fig. 3.83 is planner and redraw it with no crossing branches.(a)(b) Figure 3.83
Rework Prob. 3.5 using mesh analysis.Chapter 3, Problem 5Obtain v0 in the circuit of Fig. 3.54.Figure 3.54
Rework Prob. 3.6 using mesh analysisChapter 3, Problem 6Use nodal analysis to obtain v0 I the circuit in Fig. 3.55?Figure 3.55
Rework Prob. 3.8 using mesh analysis.Chapter 3, Problem 8Using nodal analysis, find v0 in the circuit in Fig. 3.57?Figure 3.57
Apply mesh analysis to the circuit in Fig. 3.84 and obtain Io.Figure 3.84 For Prob. 3.38.
Determine the mesh currents i1 and i2 in the circuit shown in Fig. 3.85?Figure 3.85
Given the circuit in Fig. 3.53, calculate the currents i1 through i4?Figure 3.53
For the bridge network in Fig. 3.86, find Io using mesh analysis?Figure 3.86
Apply mesh analysis to find io in Fig. 3.87.Figure 3.87
Determine the mesh currents in the circuit of Fig. 3.88.Figure 3.88
Use mesh analysis to fid vab and io in the circuit in Fig. 3.89?Figure 3.89
Use mesh analysis to obtain io in the circuit of Fig. 3.90.Figure 3.90
Find current I in the circuit in Fig. 3.91?
Calculate the mesh current i1 and i2 in Fig. 3.92?
Rework Prob. 3.19 using mesh analysis.Chapter 3, Problem 3.19Use nodal analysis to find v1, v2 and v3 in the circuit in Fig. 3.68?
Determine the current through the 10-k( resistor in the circuit in Fig. 3.93 using mesh analysis?Figure 3.93
Find vo and io in the current of Fig. 3.94?Figure 3.94
Use mesh analysis to find the current io in the circuit in Fig. 3.95?Figure 3.95
Apply mesh analysis to find vo in the circuit in Fig. 3.96?Figure 3.96
Use mesh analysis to find i1, i2, and i3 in the circuit of Fig. 3.97?Figure 3.97
Find the mesh currents in the circuit of Fig. 3.98 using MATLAB.Figure 3.98 For Prob. 3.53
Find the mesh currents i1, i2, and i3 in the circuit in Fig. 3.99?Figure 3.99
In the circuit of Fig. 3.100, solve for i1, i2, and i3.Figure 3.100
Determine v1 and v2 and circuit of Fig. 3.101?Figure 3.101
In the circuit in Fig. 3.102, find the values of R, V1, and V2 given that io = 18 mA.Figure 3.102
Find i1, i2, and i3 the circuit in Fig. 3.103.Figure 3.103
Rework Prob. 3.30 using mesh analysis.Chapter 3, Problem 30.Using nodal analysis, find vo and io in the circuit of Fig. 3.79.Figure 3.79

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