What unit is used to measure electrical resistance?

The unit used to measure electrical resistance is Ohms. This unit is derived from Ohm's Law, which states that voltage (in volts) is equal to the current (in amps) multiplied by the resistance (in ohms). Essentially, resistance is a measure of how much an object opposes the flow of electric current. A higher ohm value indicates more resistance, while a lower value indicates less resistance, making it crucial for understanding electrical circuits and ensuring they operate correctly and safely.

Volts, amps, and watts correspond to different aspects of electrical measurements—volts measure electrical potential, amps measure current, and watts measure power—but they do not quantify resistance. Therefore, Ohms is distinctly recognized as the unit specifically linked to the measurement of resistance in electrical systems.