Electric potential at a point in an electric field.

The electric potential at a point in the electric field is V. What is the electric potential energy of a charge q_0 placed at that point?

Define electrostatic potential at a point in an electric field in terms of line integral of the field. Derive its general expression for single charge.

Derive an expression for electric potential at-a point due to an electric dipole with the help of diagram and hence calculate electric potential when the point is on the axial lline of electric dipole.

Derive an expression for electric potential at general point of an electric dipole.

Derive an expression for electric potential at a point due to electric dipole. Hence find its value on equatorial line?