How does a torque affect the dipole in an electric field ?

Derive the expression for torque on an electric dipole in a uniform electric field.

Derive an expression for torque on a dipole placed in an electric field.

Torque acting on a dipole in electric field is given by:

How should an electric dipole be kept in an electric field so that no torque acts on it ?

When torque on a dipole in an electric field will be maximum?

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.

When the torque acting on electric dipole in uniform electric field becomes zero ?