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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 charged with `Q` and `q(Q gt q)` and are insulated from each other. The potential difference between the spheres will be

A

`1/(4pi epsi_(0)) (q/r-Q/R)`

B

`1/(4pi epsi_(0))(Q/R+q/r)`

C

`(1)/(4pi epsi_(0))(q/r-r/R)`

D

`1/(4pi epsi_(0)) (q/R-Q/r)`

Text Solution

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The correct Answer is:
C
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