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A charge Q is distributed over two conce...

A charge Q is distributed over two concentric conducting thin spherical shells radii r and R `(R gt 1)` . If the surface charge densities on the two shells are equal, the electric potential at the common centre is:

A

`1/(4piepsilon_0)(Q(R+r))/(R^2+r^2)`

B

`1/(4piepsilon_0)(Q(R-r))/(R^2+r^2)`

C

`1/(4piepsilon_0)(Q(R+r)^2)/(R^2+r^2)`

D

`1/(4piepsilon_0)(Q(R+r)^2)/(R^2+2r^2)`

Text Solution

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The correct Answer is:
A
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