Electric Dipole
Electric Dipole: Overview
This topic covers concepts such as Electric Dipole, Electric Dipole Moment, Electric Field Due to Dipole at Axial Point, Electric Field Due Dipole at Equatorial Point, Electric Field Due Dipole at General Point, and Centre of Charge.
Important Questions on Electric Dipole
The S.I unit of electric dipole moment is

Which orientation of an electric dipole(p) in a uniform electric field(E) would correspond to stable equilibrium?

Which of the following has a dipole moment is zero in the absence of an electric field.


In the absence of electric filed, the dipole moment of is _____ .

has a permanent dipole moment.

When the centres of positive charges and negative charges lie at same place, their dipole moment is zero.

Calculate the electric field due to a dipole at a point on the equatorial plane.

What is the unit of electric dipole moment?

Electric field due to the electric dipole at the equatorial plane is given as:

For a dipole find the maximum torque on the dipole if

Identify the physical quantity, which has as its unit coulomb-metre.
(Choose from: magnetic moment/dipole moment)

Calculate the electric field due to a dipole on its axial line.


An electric dipole of moment is placed in a uniform electric field . Then, the potential energy of the system is .

In a system two charges and are situated at point and . Find the electric dipole moment of the system.

What is the net force (in SI units) on an electric dipole in a uniform electric field?
(Give only the magnitude of the solution).

For the same distance from centre of the dipole the ratio of electric fields at longitudinal and transverse position is

An electron and a proton are apart. The dipole moment of the system is (Take, )

The dipole moment of molecule is . The separation between its ions is ()
