Which unit measures voltage?

Voltage is measured in volts, which is the unit that quantifies the potential difference in electrical energy per unit charge between two points in an electric circuit. It can be understood as the force that pushes electric charges through a conductor.

In a circuit, voltage serves as the driving force that enables current to flow, with higher voltage typically resulting in a greater current, provided resistance remains constant. This makes volts a fundamental measurement in understanding electrical circuits, as it directly relates to how much energy is carried by the charges as they move through a circuit.

The other units mentioned serve different purposes in physics: coulombs measure electric charge, joules measure energy, and amperes measure current. Each of these units plays a unique role in the study of electricity, but volts are specifically tied to voltage measurements.