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A charge Q is kept at the centre of a ci...

A charge Q is kept at the centre of a circle of radius `'r'` If permittivity of the free space is e, then work done in carrying a charge q along the diameter of the circle from one end to the other will be

A

`(qQ )/( 4 pi in_0 in_r r)`

B

`(qQ)/( 8 pi in_0 r)`

C

`(qQ)/(2 pi in_0)`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
D
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