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A square of side a charge Q at its centr...

A square of side a charge Q at its centre and charge q at one of the corners. The work required to be done in moving the charge q from the corner to the diagonally opposite corner is

A

Zero

B

`(Qq)/(4pi epsilon_0a)`

C

`(Qqsqrt2)/(4pi epsilon_0a)`

D

`(Qq)/(2pi epsilon_0a)`

Text Solution

Verified by Experts

The correct Answer is:
A
`W=q(V_C-V_A)`
Since `V_C=V_A`
W = 0
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