Question

Derive an expression for electric field due to an electric dipole at any point on the axial and equatorial point

Answer 1

the charge is negative, the electric field will be acting inward i.e, towards the charge –q. Thus, E_1 is acting in opposite direction to E_2. ... The electric field along the axial point is, If the point P lies in the equatorial points at a distance r from the midpoint of the dipole in perpendicular direction.