Derive an expression for torque experiencedby electric dipole in a uniform electric field

Derive an expression for the torqe experienced by magnetic dipole in a uniform magnetic field and hence define magnetic dipole moment.

Find an expression for the troque experienced by an electric dipole placed in a uniform electric field. Hence, define electric dipole moment.

Derive an expression for the torque expereinced by a amgnetic dipole suspened in a uniform magneic field.