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Q.

Two concentric conducting shells A and B are of radii R and 2R. A charge + q is placed at the center of the shells. Shell B is earthed and a charge q is given to shell A.Find the charge on outer surface of B.

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Detailed Solution

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Question Image                             
If outermost shell is earthed. Then, charge on outer surface of outermost shell in this case is always zero.

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Two concentric conducting shells A and B are of radii R and 2R. A charge + q is placed at the center of the shells. Shell B is earthed and a charge q is given to shell A.Find the charge on outer surface of B.