A dipole of electric dipole moment P is placed in a uniform electric field of strength E. If $ heta

Question

A dipole of electric dipole moment P is placed in a uniform electric field of strength E. If $	heta$ is the angle between positive directions of $P$ and $E$, then the potential energy of the electric dipole is largest when $	heta$ is\

Professor PC Thomas Classes · Answer

According to one convension PE of a dipole $=\mathrm{PE}(1-\cos 	heta)$\ PE will be maximum when $\cos 	heta=-1$ ie. $	heta=180^{\circ}$\ According to another convension\ PE of a dipole $=-\mathrm{PE} \cos 	heta$\ It will be maximum when $	heta=180^{\circ}$\