Final-Fall2007-08 - Physics 211 Final Exam January 28, 2008...

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Physics 211 Final Exam January 28, 2008 Your name: ID number: Time given: 120 minutes Please provide your reasoning for each step of your solution (providing an answer without a solution is not enough) 1
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Problem 1 A uniformly charged insulating shell has internal and external radii R and 3 R and the volume charge density is ρ . The points A and B are located at the inner and outer surfaces of the shell, as shown on the Figure 1. Find the potential di±erence Δ V AB = V B - V A . 2
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Problem 2 An electric circuit consists of the 3 batteries with the voltages Δ V 1 = 1 V V 2 = 4 V and Δ V 3 = 8 V and 3 resistors R 1 = 3Ω, R 2 = 2Ω and R 3 = 8Ω, as shown on the Figure 2. Find the electric currents in each of the resistors. 3
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In the circuit shown on the Figure 3, two capacitors with capacitances C 1 = C and C 2 = 4 C are originally disconnected, as shown on the Figure 3, and the capacitor C 1 carries the charge Q while the charge of C 2 is 3 Q . Then the keys A and B are switched on
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This note was uploaded on 03/01/2010 for the course PHYS 211 taught by Professor Dimitripolyakov during the Spring '10 term at American University of Beirut.

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Final-Fall2007-08 - Physics 211 Final Exam January 28, 2008...

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