An electric dipole has the magnitude of its charge as `q` and its dipole moment is `p`. It is placed in a uniform electric field `E`. If its dipole moment is along the direction of the field, the force on it and its potential energy are respectively

Options

A. 2q . E and minimum
B. q.E and p.E
C. Zero and minimum
D. q.E and maximum

Answer

C

Explanation

In uniform electric field
`F_("net") =0`
and `U_("min") = -pE ` when `theta = 0^@`