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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)/(4pi epsilon_(0))((q)/(r )-(q)/(R ))`

B

`(1)/(4pi epsilon_(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

Verified by Experts

The correct Answer is:
A
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