What is electric dipole ? Write its SI unit.

Explanation

An electric dipole is a system of two equal and opposite point charges separated by a finite distance.
If .2a. is the distance between two charges q and `-q` the dipole moment of this system is given by `vecp =q(2veca)` Electric dipole moment is a vector quantity, its direction is pointing towards positive charge.

The unit of electric dipole moment is Cm (Coulomb-meter) or Ampere-second meter.
Its dimensional formula is `M^(0)L^(1)T^(1)A^(1)` and `M^(0)L^(1)T^(0)Q^(1)`.
Total charge of the dipole system is zero. But its electric field is non-zero because two opposite charges are situated at different places.