There are two possible alignments of a dipole in an external electric field where the dipole is in equilibrium.

(a) Draw a field diagram for a uniform electric field and show these two alignments.

(b) Are both alignments stable? (Consider what would happen in each case if you gave the dipole a slight twist.)

(c) Based on your answer to part \(b\) and your experience in mechanics, in which orientation does the dipole have less potential energy?