Volt (noun)

1. A unit of electric potential or electromotive force, equal to the difference of electric potential between two points on a conductor carrying a current of one ampere when the power dissipated between the points is one watt.
2. The unit of measurement of the electric potential difference, equal to the difference of electric potential between two points on a conductor carrying a current of one ampere when the power dissipated between the points is one watt.
3. A unit of electric potential equal to the difference of potential between two points on a conductor carrying a current of one ampere that results in a power dissipation of one watt.
4. The unit of electric potential equal to the work done per unit charge in moving a charge from one point to another against an electric field.
5. A unit of electric potential difference equivalent to the potential difference across a conductor carrying one ampere of current when the power dissipated between the points is one watt.

Origin:

Named after alessandro volta (1745-1827), italian physicist, who invented the first electrical battery.

Examples:

1. A battery provides a potential difference of 1.5 volts across its terminals.
2. The voltage of the electric current was measured in volts.
3. The electric drill requires a power supply of at least 18 volts.
4. The voltage of the wall outlet was measured to be 120 volts.
5. The electric fence was charged with 5000 volts of electricity.