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A small conducting sphere of radius r is...

A small conducting sphere of radius r is lying concentrically inside a bigger hollow conducting sphere of radius R. The bigger and smaller spheres are changed with Q and `q(Q gt q)` and are insulated from each other. The potential difference between the spheres will be

A

`(1)/(4piepsilon_(0))[(q)/(r)-(q)/(R)]`

B

`(1)/(4piepsilon_(0))[(q)/(r)+(q)/(R)]`

C

`(1)/(4pi epsilon_(0))[(q)/(r)-(Q)/(R)]`

D

`(1)/(4pi epsilon_(0))[(q)/(r)+(Q)/(R)]`

Text Solution

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The correct Answer is:
A
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