Electric Potential
Electric potential is also called electric field potential.
It is the amount of work done which is needed to move a unit charge from a
reference point to a specific point without any acceleration.
According to electrostatics, electric potential is a scalar
quantity which is denoted by V.it is equal to the electric potential energy of
any charged particle at any location.
This value is calculated in a static electric field at a
specific time in joules per coulomb (J C−1) or volts. The value of electric potential at infinity is
assumed zero.
SI Unit
The SI derived unit of electric potential is the volt, which is the difference in electric potential between two points.
In Electrostatics
The electric potential at a point r is given below:
Here C is an arbitrary path
connecting the point to r, when the ∇ × E is zero
then the line integral does not depend on the specific path C. In this case the
electric field is conservative:
Electric potential due to point charge
The electric potential due
to point charge Q,with respect to r is shown below:
here ε0 is the dielectric
constant. This is known as the Coulomb potential.
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