1996 exam 2

# 1996 exam 2 - PHY3054 Exam 2 Fall 1996 Selman Hershfield 1...

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PHY3054 - Exam 2 - Fall 1996 - 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 (BDEF), (AC) brightest 2. dimmest (BF), (AC), D, E brightest 3. dimmest (BF), (AD), (CE) brightest 4. dimmest (BF), (CE), D, A brightest 5. dimmest (BDF), E, (AC) brightest 2. In Fig. 1 what is the voltage difference between points P1 and P2, V P1 - V P2 ? 1. 0 V 2. 2 V 3. 3 V 4. 4 V 5. 6 V 3. What is the effective resistance of the circuit shown in Fig. 2? (Choose the closest answer.) 1. 1 Ohm 2. 2 Ohms 3. 4 Ohms 4. 6 Ohms 5. 10 Ohms 4. In Fig. 3 if the voltage across R 1 is 2 V, what is the current through R 5 ? (Choose the closest answer.) 1. 0.2 A 2. 0.7 A 3. 1.0 A 4. 1.4 A 5. 2.4 A

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5. In Fig. 4 what is the current in the circuit? Give both the magnitude and direction. (Choose the closest answer.) 1. 0 A 2. 0.5 A clockwise 3. 0.5 A counterclockwise 4. 0.75 A clockwise 5. 0.75 A counterclockwise 6. In Fig. 5 what is the current from E to B? (Choose the closest answer.) 1. -1.3 A 2. -0.75 A 3. -0.6 A 4. 0.6 A 5. 1.3 A 7. In Fig. 5 what is the voltage difference, V D - V F ? 1. -6.25 V 2. -4.9 V 3. 4.9 V 4. 5.5 V 5. 6.25 V 8. In Fig. 6 what is the effective capacitance of the circuit? (Choose the closest answer.) 1. 0.4 micro-F 2. 0.625 micro-F 3. 1.6 micro-F 4. 3.5 micro-F 5. 5.1 micro-F 9. In Fig. 7 if the voltage across C 4 is 2 V, what is the charge on C 2 ? (Choose the closest answer.) 1. 2 micro-C 2. 4 micro-C
3. 6 micro-C 4. 8 micro-C 5. 10 micro-C 10. Place your name, social security number, and exam number on your bubble sheet -- NOW. Also, print and sign your name on the exam printout.

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