Question

Expression for pe of dipole in external electric field

Answer 1

Consider a dipole with charges q1 = +q and q2 = -q placed in a uniform electric field as shown in the figure above. ... From the above equation, we can see that the potential energy of dipole placed in an external field is zero when the angle Ɵ is equal to 90° or when the dipole makes an angle of 90°.