What unit is electrical resistance measured in?

Electrical resistance is measured in ohms, which is a fundamental unit in electronics and electrical engineering. The concept of resistance is crucial as it quantifies how much a material opposes the flow of electric current. According to Ohm's Law, resistance (R) is defined as the voltage (V) across a conductor divided by the current (I) flowing through it, expressed mathematically as R = V/I. This relationship indicates that ohms provide a standard way to measure that opposition.

Understanding the role of resistance in an electrical circuit is vital for predicting how a circuit will behave under different conditions. For example, a higher resistance means that less current will flow for a given voltage, while lower resistance allows more current to pass through. This is pivotal in designing circuits and ensuring they operate correctly without overheating or malfunctioning.

The other units mentioned pertain to different electrical properties: volts measure electric potential, amperes measure electric current, and watts measure electrical power, which is the product of voltage and current. Each of these units plays its own important role in the study and application of electrical concepts, but only ohms directly measure resistance.