What is the unit of electrical resistance?

The unit of electrical resistance is the ohm. This unit is named after Georg Simon Ohm, who formulated Ohm's Law, which relates voltage, current, and resistance in an electrical circuit. The ohm is defined as the amount of resistance that allows one ampere of current to flow with a voltage of one volt across it. This foundational concept is key to understanding electrical circuits, as it helps determine how much current will flow under a given voltage and resistance condition.

The other options represent different electrical units: the farad measures capacitance, the volt measures electrical potential, and the watt measures power. Each of these plays an important role in electrical engineering and physics, but none are associated with measuring resistance.