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Unformatted text preview: density of each conducting plate. Problem 6.3 (10 points). A point charge q is located at distance r >> R from the center of a uniform sphere of radius R , made of a linear dielectric. In the first nonvanishing approximation in small parameter R / r , calculate: (i) the interaction force, and (ii) the energy of interaction between the sphere and the charge. Problem 6.4 (10 points). A uniform electric field E has been created (by external, remote sources) inside a uniform, linear dielectric. Find the changes of field E , created by cutting out a cavity in the shape of a round cylinder of radius R , with the axis perpendicular to the external field (see Fig. on the right). d p 1 d 2 d P R r E...
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 Fall '08
 Stephens,P
 Charge, Work

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