Dear student,

Electric potential, the amount of work needed to move a unit charge from a reference point ( or infinity ) to a specific point against an electric field. The electric potential is denoted by V.

Now, let suppose there us a point charge Q.

Therefore, Electric potential ( V ) due to a point charge Q at a distance r is given by :-

V = kQ / r

Where k is 1 /4 pie (epsilon)