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Three concentric spherical metallic sphe...

Three concentric spherical metallic spheres `A,B` and `C` of radii `a , b` and `c(a lt b lt c)` have surface charge densities `sigma , -sigma` and `sigma` respectively.

A

`(sigma)/(in_(0))[(b^(2)-c^(2))/( c )+a]`

B

`(sigma)/(in_(0))[(a^(2)-b^(2))/(a)+c]`

C

`(sigma)/(in_(0))[(a^(2)-b^(2))/(b)+c]`

D

`(sigma)/(in_(0))[(b^(2)-c^(2))/(b)+a]`

Text Solution

Verified by Experts

The correct Answer is:
C
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