Question

In which of the states shown in figure, is potential energy of a electric dipole maximum?

• A.
• B.
• C.
• D.

Answer 1

Answer: (A)

Potential energy of electric dipole, $U=-pE$
$=-pE\cos \theta$
In fig. (a) $\theta =\pi rad$
Hence, $U=-pE\cos \pi =+DE=$ maximum