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Unformatted text preview: ± µ É ± ¸ É ± Ê and we have ( ± µ ¶ ± ¸ ¶ ± Ê ÅÀ The inner and outer shields are connected to the ground. We put the charge Q on the third shield. Find the energy of this system. 5-The total charge Q is distributed uniformly on a conductor sphere with radius R . Find the force applied by the upper half of the sphere on the lower half. 6- The conductors of an isolated two-wire transmission line, each of radius b , are spaced at a distance D apart. Assuming D>> b and a voltage ± between the lines, find the force per unit length on the lines. 7- A parallel-plate capacitor is placed in a dielectric liquid with permittivity ² . In both cases below, find the increase in the level of liquid between capacitor plates. The surface of plates equals S , distance between plates d , density of the liquid ³´ and potential between plates V . a) b)...
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- Fall '10