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If identical charges (-q) are placed at ...

If identical charges `(-q)` are placed at each corner of a cube of side `b`, then electric potential energy of charge `(+q)` which is palced at centre of the cube will be

A

`(8sqrt2q^(2)) / (4piin_(0) b) `

B

`(-8sqrt2q^(2)) / (4piin_(0) b) `

C

`(-4sqrt2q^(2)) / (piin_(0) b) `

D

`(-4sqrt2q^(2)) / (piin_(0) b) `

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