Q .     Four equal charges `Q` each are placed atfour
corners of a square of side a each. Work done
in carrying a charge `- q` from its centre to
infinity is

VIT 2013
A

Zero

B

`sqrt(2q)/(pi epsilon _(0)a)`

C

`(q^(2))/(2pi epsilon _(0)a)`

D

`sqrt(2q)^(2)/(pi epsilon _(0)a)`

0
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