What units are used to measure the electrical resistance of a circuit?

The measurement of electrical resistance in a circuit is expressed in ohms. The ohm is the standard unit that quantifies how much a material or component resists the flow of electric current.

Resistance is a fundamental concept in electrical engineering and is determined by the properties of the material and its dimensions. According to Ohm's Law, resistance (R) is calculated as the voltage (V) across a component divided by the current (I) flowing through it, represented by the formula R = V/I. This law illustrates the relationship between the three electrical quantities: voltage, current, and resistance.

Volts measure the electric potential difference, amperes quantify the flow of electric current, and watts indicate power, which is the rate of energy transfer. These units are crucial in understanding electrical circuits, but they serve different purposes in the context of electricity. Ohms specifically provide insight into how much a circuit resists the flow of electric charge, making it the correct choice for this question.