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A charge Q is distributed over two conce...

A charge Q is distributed over two concentric hollow spheres of radii r and `R (gt r)` such that the surface charge densities are equal. Find the potential at the common centre.

A

` (KQ( r + R))/( r^2 + R^2)`

B

` (KQ( r + R))/( r^2 - R^2)`

C

` (KQ( r - R))/( r^2 + R^2)`

D

` (KQ( r - R))/( r^2 - R^2)`

Text Solution

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The correct Answer is:
A
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