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A and C are concentric conducting spheri...

A and C are concentric conducting spherical shells of radius a and c respectively.A is sueeounded by a concentric dielectric medium of inner radius a, outer radius b and dielectric constant k. If sphere A is given a charge Q, the potential at the outer surface of the dielectric is

A

`(Q)/(4piesplion_(0)kb)`

B

`(Q)/(4piepsilon_(0))(1)/(a)+(10/(k(b-a)))`

C

`(Q0/94piepsilon_(0)b)`

D

none of these

Text Solution

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The correct Answer is:
C
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