Question

define electric dipole moment .is it a scalar or vector quantity?

Answer 1

Electric dipole moment is defined as the product of the magnitude of one of the charges and the distance between them. It is a a vector quantity .its direction is from the negative charge to the positive charge. It's unit is coulomb meter.

Answer 2

electric dipole moment is a measure of the seperation of +ve  and -ve electrical charge in a electrical charged body.
electric dipole P=-qD

its a vecor quantity.its direction of moving of charge is frm -ve to +ve.
unit:- coulamb meter.