Question

For what value of angle between dipole moment and electric field remain in stable and unstable equillibrium

Answer 1

Answer:

At parallel, the potential is as negative as it gets and the body likes that, plus the torque acting on it is also zero, so the position is termed "stable equilibrium". Adipole in a uniform electric field is instable or unstable equilibrium according as the angle between the dipole andelectric field is 0 or 180.