S10P2BQuiz3A

S10P2BQuiz3A - Physics 2B Spring 2010: Quiz 3 Version A...

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Physics 2B Spring 2010: Quiz 3 Version A 1 05.07.10 Closed book. No work needs to be shown for multiple-choice questions. 1. The time constant for one RC circuit is known to be 1.2 seconds (we will call this the first RC circuit). A second RC circuit is known to have a time constant of 3.6 seconds. Initially, the two capacitors are fully charged and both circuits have open switches. The circuits are then closed and the capacitors are discharged until they have one-fourth of their original charge. Which of the following is true ? a) The first RC circuit takes one-third as long to complete this process as the second . b) The first RC circuit takes three times as long to complete this process as the second. c) The first RC circuit takes one-fourth as long to complete this process as the second. d) The first RC circuit takes four times as long to complete this process as the second. e) The first RC circuit takes 2.4 seconds longer to compete this process than the second.
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This note was uploaded on 12/11/2011 for the course PHYS 2B 2b taught by Professor Hirsch during the Spring '10 term at UCSD.

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S10P2BQuiz3A - Physics 2B Spring 2010: Quiz 3 Version A...

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