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Electric Potential

Because in the presence of an electric field a charged particle experiences a force, in the presence of an electric field a charged particle has potential energy. The energy of a charged particle of charge q in an electric field is given bywhereis the electric potential at the position of the particle. The electric potential at distancefrom a chargeisA graph of againstis shown below.

If we have several charges, each giving rise to a potential field then we can find the net potential at a point by adding the potentials due to the individual charges.

Potential at P due to

Potential at P due to

Potential at P due toand

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