Electrical voltage between 2 points in a point in the electrical circuit or electric work is done in moving from one point to the unit 1 prachubuak to another.
Potential difference between two points in an electric field or in electrical circuits. Is made to move one unit positive charge from one point to another point.
Electric potential difference between the points 2 points in an electric field or in the circuit. Is made to move 1 unit positive charge from one point to another point.