What unit is used to measure voltage?

The unit used to measure voltage is indeed volts (V). Voltage, often referred to as electric potential difference, is a measure of the electric potential energy per unit charge between two points in an electrical field. It indicates how much energy would be given to a charge if it were moved from one point to another.

In electrical terminology, one volt is defined as the potential difference that will move one ampere of current against one ohm of resistance. Understanding this relationship highlights the importance of volts in electrical circuits, as it determines how much energy is available to move charges through a conductor.

The other units mentioned relate to different properties in electrical systems: amps measure current (the flow of electric charge), ohms measure resistance (the opposition to current flow), and watts measure power (the rate at which energy is used or produced in a circuit). Each of these plays an essential role in electrical engineering and safety, but when specifically discussing voltage, volts are the unit that is directly applicable.