How does the energy of dipole change when it is rotated from unstable equilibrium to stable equilibrium in a uniform electric field.

Calculate the amount of work done in turning an electric dipole of dipole moment 2xx10^-8 C-m from its position of unstable equilibrium of the position of stable equilibrium in a uniform electric field of intensity 10^3 NC^-1 .

Depict the orientation of the dipole in (a)stable and (b) unstable equilibrium in a uniform electric field.

Find the amount of work done in rotating an electric dipole of dipole moment 3.2 xx 10^(- 8) Cm from its position of stable equilibrium to the position of unstable equilibrium in a uniform electric field if intensity 10^(4) N// C .