exam 2 - PHY2054 Exam 2 Fall 1997 Selman Hershfield 1 In...

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PHY2054 - Exam 2 - Fall 1997 - Selman Hershfield 1. In Fig. 1 each of the resistors are light bulbs with identical resistance. List the light bulbs from the dimmest to the brightest. Group light bulbs with the same brightness in parentheses. 1. dimmest (ABDE),(CF) brightest 2. dimmest (CF),(ABDE) brightest 3. dimmest (DE),(AB),(CF) brightest 4. dimmest (DE),(ABCF) brightest 5. dimmest (DE),(CF),(AB) brightest 2. In Fig. 1 what is the voltage difference between points P1 and P2, V P1 - V P2 ? Assume that the resistors all have the same resistance. 1. -6 V 2. -3 V 3. 0 V 4. 3 V 5. 6 V 3. What is the effective resistance of the circuit shown in Fig. 2? (Choose the closest answer.) 1. 0.6 Ohms 2. 1.6 Ohms 3. 2.4 Ohms 4. 12 Ohms 5. 16 Ohms 4. In Fig. 3, if the voltage across R 2 is 2V, what is the current through R 3 ? (Choose the closest answer.) 1. 0.1 A 2. 0.3 A 3. 0.5 A 4. 0.7 A 5. 1.0 A
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5. What is the current in the circuit shown in Fig. 4? Give both the magnitude and the direction. (Choose the closest answer.) 1. 0.5 A clockwise 2. 0.5 A counterclockwise 3. 0.6 A counterclockwise 4. 0.7 A clockwise 5. 0.7 A counterclockwise 6. What is the current going from B to E in Fig. 5? 1.
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exam 2 - PHY2054 Exam 2 Fall 1997 Selman Hershfield 1 In...

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