(a) Derive and expression for the electric field at any point on the equatorial line of an electric
Channel: Doubtnut
Date: 2020-01-03

(a) Derive and expression for the electric field at any point on the equatorial line of an electric dipole. (b) Two identical point charges, q each kept 2m apart in air. A third point charge Q of unknown magnitude and sign is placed on the line joining the charges such that the system remains in equilibrium. Find the position and anture of Q.