S10P2BQuiz2A

S10P2BQuiz2A - Physics 2B Spring 2010 Quiz 2 Version A 1...

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Physics 2B Spring 2010: Quiz 2 Version A 1 04.23.10 Closed book. No work needs to be shown for multiple-choice questions. 1. Four capacitors are connected as shown below. What is the equivalent capacitance of the combination between points a and b ? a. 12 μ F. b. 5.0 μ F. c. 20 μ F. d. 15 μ F. e. 34 μ F. 2. Four capacitors are connected as shown below. If a difference of potential of 18 V is applied between points a and b , what is the potential difference and the charge in the top 6 μ F capacitor? a. 18 V and 90 μ C. b. 3 V and 54 μ C. c. 6 V and 36 μ C. d. 3 V and 36 μ C. e. 6 V and 54 μ C. 3 . A parallel plate capacitor is made from two square plates, 20 cm on a side. The plates are spaced 1.0 cm apart and connected to a 50 V battery. How much energy is stored in the capacitor? a. 8.9 × 10 8 J. b. 2.2 × 10 7 J. c. 3.5 × 10 11 J. d. 8.9 × 10 10 J. e. 4.4 × 10 8 J. 4 . A coaxial cable consists of 4.0-mm-diameter inner conductor and an outer conductor of diameter 3.2 cm and negligible thickness. If the conductors carry line charge densities ± 0.56

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