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Question

A hollow conducting spherical shell of radius is charged with coulomb. The amount of work done for moving any charge from the centre to the surface of the shell will be

A

B

Zero

C

D

Medium

Solution

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Correct option is
B

Zero

Potential inside the hollow conducting sphere is same as potential at the surface of sphere
i.e.
Difference in potential between the surface and center 
Thus work done, 
So, no work done is done in moving a charge on a equipotential region.

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