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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/4pivarepsilon_(0)r`

B

`QQ'/4pivarepsilon_(0)r`

C

Zero

D

`Q'/4pivarepsilon_(0)r`

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