The ratio of the potential of a point charge to its electric quantity in an electric field is called the point potential.
u=e/q
Where u stands for potential, e stands for potential energy and q stands for charge.
The work done by the electric field force to move the charge from a point to a zero potential point is called the electric potential energy of the charge at that point.
e=w=uq
Potential difference formula UAB = φ a-φ b