The electric dipole is a pair of two equal and opposite charges, +q and −q are separated by a very small distance. The algebraic sum of the charge on the dipole is zero and the electric field of the dipole is not zero, thus the electric field of dipole is added.
The electric dipole moment for a pair of opposite charges of magnitude q is defined as the magnitude of the charge times the distance between them and the defined direction is toward the positive charge.
