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Unformatted text preview: Physics 211 Final Exam January 23, 2006 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 Problem 1 A uniformly charged rod AB has a length L and an unknown negative charge density λ . Two given positive charges Q and 2Q are located at the points C and D, as shown on the Figure 1. Find the value of λ if  AC  =  BD  = L 2 and it is known that the total electrostatic force acting on the charge Q is zero. 2 Problem 2 A uniformly charged insulating spherical shell has the internal and external radii R and 2 R and the volume charge density ρ , as shown on the Figure 2. Find the potential difference Δ V OA = V A V O between the points O and A if  AO  = 3 R . 3 Problem 3 A spherical capacitor consists of two conducting spheres with the radii R and 3 R The space between the spheres is partially filled with the dielectric having the form of the spherical shell with the internal and external radii...
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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.
 Spring '10
 DimitriPolyakov
 Charge, Magnetism

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