An electric dipole moment is defined as a pair of equal and opposite charges separated by a distance. The direction of an electric dipole is always from the negative charge to the positive charge. The dipole moment is a vector quantity.

The electric dipole moment vector is represented by μ

μ = q * d

where μ is the dipole moment vector, q is the magnitude of the charge, and d is the distance between the charges.

What is the direction of electric dipole moment?