Derive expression for torque in cartesian co-ordinate system.

Derive an expression for torque acting on a bar magnet placed in a uniform magnetic field.

Derive an expression for torque acting on a barmagnet placed in magnetic field

Derive an expression for torque acting on an electric dipole suspended in a uniform electric field. Use this relation to derive the expression for P.E. of dipole in an electric field.

Derive an expression for torque acting on an electric dipole in a uniform two dimensional electric field. Or Write the expression for torque vecpi acting on a dipole of dipole moment vecp placed in an electric field vecE .

Derive an expression for the torque acting on a rectangular current carrying loop suspended in a uniform magnetic field.

Derive an expression for Torque acting on a bar magnet placed in a uniform magnetic field.

Derive the expression for the torque acting on a current carrying loop placed in a magnetic field.

Derive an expression for the torque acting on an electric dipole suspended freely in a uniform electric field. How will you determine the direction of torque?

Derive a expression for the torque acting on a electric dipole in uniform electric field. Under what condition, the torque will be maximum?