Electric Potential ( Electrostatic Voltage )

The electric potential is given by the following formula: From Null Identity we know that a curl-free field can be expressed as the gradient of a scalar field. We call this scalar field a scalar electric potential V. NB! If a charge is being moved, then we have a current in the same direction as the electric field. Therefore a work can only be done in the reserve direction of electric field, otherwise the work is 0. Electric potential V is related to the work done in carrying a charge from one point to another, no matter which path we choose the potential is the same. Work done by carrying a single charge is given by: Potential difference or voltage can be determined by: