GENERAL PHYSICS 2

Please read the instructions and questions in every number (#34 to #50), and please provide the best answers (letters) with brief but effective solutions.

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34. What is the power input to an electric heater that draws 3.0 A from a 220 v outlet? a. 73.333 Watts b. 223 Watts c. 217 Watts d. 660 Watts For numbers 35-38 RZ R3 R1 Rs The diagram shows 5 resistors R4 W connected in a parallel-circuit connection. Each resistor has a resistance of 3.00. The voltage supply is 20 volts. 35. Find R23 a. 692 b. 20 c. 8 9 d. 2.5 36. Find R234 a. 69 b. 20 c. 80 d. 2.5 Q 37. Find RT a. 69 b. 2 0 C. 89 d. 2.5 38. Find IT a. 60 b. 20 :C. 89 d. 2.5 0 For numbers 39-42 10 Q Use the diagram at the RI R4 right R1 = 40 R2 = 40 5 R3 = 8.0 R2 4 0 R4 = 100 RS R5 = 40 8 0 39. Find R23 a. 120 . . .b. 14.Q c. 6.477 0 d. 10.477 0 40. Find R45 a. 1292 b. 14 92 c. 6.477 9 d. 10.477 0 41. Find R2345 a. 1202 b. 140 c. 6.477 $2 d. 10.477 9 42. Find RT a. 1202 b. 14 02 c. 6.477 0 d. 10.477 943. What law states that the sum of the currents entering and leaving a junction is equal to zero? a. Ampere's Law c. Kirchhoff's Second Law b. Kirchhoff's First Law d. Ohm's Law 44. A charged particle moving parallel to a magnetic field will experience a, no magnetic force b. a magnetic force directed into the page c. a magnetic force that is directed out of the page d. a magnetic force that is perpendicular to the magnetic field. 45. Electric current, which consists of moving charges, produces a. magnetic field. .b. magnet C. force field d. flow 46. For a charge to experience a magnetic force in a magnetic field, it must be a. Moving b. negative C. positive d. stationary 47. Where is the magnetic field strongest in a circular loop? a. Outside the loop c. side of the loop b. center of the loop d. equal at any part of the loop 48. Which of the following is NOT true about two parallel wires carrying currents in the same direction? a. They repel each other. b. They attract each other c. the magnetic field in one wire exerts a force on the other wire. d. the force exerted by the wires on one another form an action-reaction pair. 49. The electromotive force around a closed path is equal to the negative of the time rate of change of the magnetic flux enclosed by the path. a. Gauss's Law C. Kirchhoff's Law b. Faraday's Law . d. Ohm's Law 50. What is the induced electromotive force in a. 0.50 m rod moving with a velocity of 1 m/s perpendicular to a field of 2x10 4 T. a. 1.0 x 10-4 V C. 2.0 x 104 V b. 1.5 x 104V d. 2.5 x 10-4 V