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An electric dipole of dipole moment vec(...

An electric dipole of dipole moment `vec(P)` is placed in a uniform electric field `vec(E)` such that `vecP` is perpendicular to `vecE` The work done to. turn the dipole through an angle of `180^@` is

A

zero

B

pE

C

2pE

D

`sqrt(2)` pE

Text Solution

Verified by Experts

The correct Answer is:
A
`W=U_(f) -U_(i) = -pE xx 270 -(-pE cos 90^(@)) =0`
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