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A small sphere A of radius r and carryin...

A small sphere A of radius r and carrying a charge q is enclosed by a concentric spherical shell B of radius 2r carrying a charge 29. When A and B are connected by a conducting wire, the charge will flow from __________ to __________ .

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A, B. Electric potential of inner sphere A is greater than that of outer spherical shell B and hence charge flows from A to B.
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