What unit is used to measure electrical resistance?

The correct answer is the unit "Ohms," which is the standard measurement for electrical resistance in a circuit. Electrical resistance determines how much current will flow in response to a given voltage according to Ohm's Law, which states that voltage equals current multiplied by resistance (V = I × R).

Ohms serve as a measure of the opposition to the flow of electric current. A higher resistance means that it is more challenging for current to flow, whereas lower resistance allows current to pass more easily. This concept is fundamental in electronics, helping to design circuits and understand how different components interact.

In contrast, Watts are a measure of power consumption, evaluating how much energy is used over time; Volts measure electrical potential or pressure that pushes electric charges through a conductor; and Amperes denote the flow of electric current. Each of these units plays a crucial role in understanding electricity, but they do not specifically quantify resistance as Ohms do.