where
is
the electric potential at the position of the particle. The electric
potential at distance
from
a charge
is
A
graph of
againstis
shown below.
A Level Physics Notes: Electricity – 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 to
and