What is the SI unit for voltage?

The SI unit for voltage is volts, represented by the symbol V. Voltage, also known as electric potential difference, measures the potential energy per unit charge between two points in an electric circuit. It essentially determines how much energy is available to move electric charges through a circuit.

Using volts as the unit allows for consistent measurement and understanding across scientific and engineering disciplines. In contrast, amperes measure electric current, watts measure power, and ohms measure resistance. Each of these units pertains to different aspects of electrical phenomena, but when specifically referring to voltage, volts is the correct and standardized unit.