Question

An electric dipole is kept on the axis of a uniformly charged ring at distance d from the centre of the ring. The direction of the dipole moment is along the axis. The dipole moment is `p`, charge of the ring is `Q` & radius of the ring is `R`. The force on the dipole is
A. `(pQ)/(3piepsilon_(0)sqrt(3)R^(2))`
B. `(4pQ)/(3piepsilon_(0)sqrt(3)R^(2))`
C. `(pQ)/(3piepsilon_(0)R^(2))`
D. zero

Answer 1

Correct Answer - d
Electric field due to ring and dipole moment are parallel to each other.