What is the unit of measure for electrical resistance?

The unit of measure for electrical resistance is the ohm. One ohm is defined as the amount of resistance that allows one ampere of current to flow when one volt of electrical potential is applied across it. This relationship is described by Ohm's Law, which states that voltage (V) equals current (I) multiplied by resistance (R), or V = IR. Understanding resistance is fundamental in electrical engineering and physics, as it influences how electrical circuits operate.

The volt measures electrical potential, the watt measures electrical power, and the ampere measures electrical current. Each of these units pertains to different aspects of electricity but does not quantify resistance itself. The ohm is the specific unit designed to measure how much a component resists the flow of electric current within a circuit.