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OpenStudy (anonymous):
Two spherical cavities of radii a and b are hollowed out from the interior of a neutral conducting sphere of radius R. At the centre of each cavity a point charge is placed q(a) and q(b). Can i use use Gauss's law for finding electric field, since the charge distribution doesn't seems symmetrical? What is the force on charge q(a) and q(b)? answer is 'zero'. why?
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OpenStudy (anonymous):
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