Hello,

The electric dipole moment is a measure of the separation of positive and negative electrical charges within a system, that is, a measure of the system's overall polarity.

Electric field due to an electric dipole at a point on its axial line: AB is an electric dipole of two point charges −q and +q separated by small distance 2d. P is a point along the axial line of the dipole at a distance r from the midpoint O of the electric dipole.

Thank you.

Dear aspirant !

Hope you are doing great ! Dipole moment can be defined as the product of magnitude of one charge and the distance between two charges. The direction of dipole moment is always from negative to positive , and it is represented by p ,and it's formula is p= q×2l . And sorry because derivation of axial line can't be derived here ,you can contact your teacher for that

Hope it helps you !

Thanking you !!