The work done in carrying a charge q onc...

The work done in carrying a charge q once round a circle of radius r with a charge Q at the centre is

`(qQ)/(4pi epsilon_(0)a)`

`(qQ)/(4pi epsilon_(0)a^(2))`

`(q)/(4pi epsilon_(0)a)`

zero

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The correct Answer is:

The work done is zero due to equipotential surfaces.

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