An electric dipole moment `p` is placed in an electric field of intensity `'E'`. The dipole acquires a position such that the axis of the dipole makes an angle `theta` with the direction of the field. Assuming that the potential energy of the dipole to be zero when `theta= 90^(@)`, the torque and the potential energy of the dipole will respectively be

Options

A. `rho E sin theta, 2 rho E cos theta`
B. `rho E cos theta - rho E sin theta`
C. `rho E sin theta, - rho E cos theta`
D. `rho E sin theta, -2 rho E cos theta`

Answer

C