along the perpendicular bisector of the dipole (at point 2) where, q. and q. are the two point-charges with opposite signs and magnitude q Coulomb,separated by distance d meters, r denotes the distance of test points (1 or 2) from centre of the dipole, 0 is the angle of inclination against the dipole axis. E. or E_ represents the electricfield exerted by either positive or negative charges on test points (1 or 2) and E is the total electric field at test points (1 or 2). P is the dipole moment.
Fig: 1
Fig: 2
Fig: 3
Fig: 4
Fig: 5