Question

derive an expression for electric field at equitorial point. ​

Answer 1

★Question :

derive an expression for electric field at equitorial point.

★ Answer :

let a dipole of charge q and sperated by a distance 2a where p is the mid point of dipole.

we to have to find the electric filed at Q which is h distance above from the centre of dipole .

resolve the electric field vectors: as follows

refer to attachment

E net = 2 E cos ∅