Electric Potential Energy
Let us consider one example, bring a unit positive charge from and infinite position to any point in the electric field, working opposite to the electric field. Take ample care to see that charge does not possess any velocity and has zero kinetic energy at the specified point. Now, work done on the charge is stored in a form of energy with the charge as particle itself is in state of motion and having some kinetic energy which helps to do work on the charge. This energy acquired by the charged particles is the potential energy of the particle n the particular electric field.
For point P, potential energy is
Where, q is the magnitude of electric charge.