Question

An electric dipole, consisting of magnitude 2.80 nC separated by 4.60  m, is in a uniform electric field of magnitude 3400 N/C. (a) Calculate the magnitude of the electric dipole moment. (b) Calculate the difference in potential energy corresponding to dipole orientations parallel to and antiparallel to the electric field.

Answer 1

(a) $p=qd=1.29·10^{-8}\text{ Cm}.$

(b) $\Delta U=pE(\cos0-\cos180°)=8.77·10^{-5}\text{ J}.$