A dipole of electric dipole moment p is ...

A dipole of electric dipole moment p is placed in a uniform electric field of strength E. If `theta` is the angle between positive directions of p and E, then the potential energy of the electric dipole is largest when `theta` is

A

`(pi)/(4)`

B

`(pi)/(2)`

C

`pi`

D

zero

Verified by Experts

The correct Answer is:

C

Dipole energy
`U = - pE cos theta`
When U is maximum
`cos theta = - 1`
`theta = pi`

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