Home
Class 12
PHYSICS
An electric dipole of dipole moment vacP...

An electric dipole of dipole moment `vacP` is placed parallel to the uniform electric field of intensity `vecE` On rotating it through `180^(@)`, the amount of work done is _______.

A

2PE

B

Zero

C

PE

D

`-2PE`

Text Solution

Verified by Experts

The correct Answer is:
A
Work done by external agent in rotating the dipole
`W = PE[costheta_1-costheta_2 ] `
`theta_1=0` and `theta_1=180^(@)`
`rArrW=2PE`
Promotional Banner

Similar Questions

Explore conceptually related problems

An electric dipole of dipole moment vecP is placed parallel to the uniform electric field of intensity vecE. On rotating it through 180^(@) the amount of work done is ..... .

An electric dipole of moment p is placed parallel to the lines of force of electric field E, then the work done in deflecting it through an angle of 180 degree is

An electric dipole of moment p is placed normal to the lines of force of electric field E, then the work done in deflecting it through an angle of 180 degree is

An electric dipole is placed parallel to a uniform electric field. Find the correct one of the following statements :

An electric dipole is placed at an angle of 30^@ to a non-uniform electric field. The dipole will experience

If electric dipole is placed in non-uniform electric field, then......

Write SI unit of electric dipole moment.

Explain the force acting on electric dipole when it is placed parallel or anti parallel to electric field.

Derive equation of potential energy of an electric dipole in a uniform electric field .