What are electric dipole and dipole mo-ment?

Define dipole moment.

The direction of electric field intensity at a point on the equatorial line of an electric dipole of dipole moment is

largest dipole moment in

An electric dipole placed in an electric field experiences a torque. When a dipole is placed in a uniform electric field the torque acting on it is found to be 0.707 times the maximum torque. Calculate the angle between the Intensity of electric fied and electric dipole moment and draw the orientation of the dipole in the electric field.

Assertion : In the absence of an external electrical field, the dipole moment per unit volume of a polar dielectric is zero. Reason : The dipoles of a polar dielectric are randomly oriented.