A positive charge Q' is moved around ano...

A positive charge Q' is moved around another positive charge Q on a circular path. If the radius of the circular path is r, then work done on the charge Q' in making one complete revolution is

A

`Q//4piepsi_(0)r`

B

`Q Q'//4piepsi_(0)e`

C

zero

D

`Q'//4piepsi_(0)r`

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The correct Answer is:

C

Zero, since the circumference of a circular path around a charge Q is an equipotential surface. So, the work done will be zero.

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