What unit is used to measure resistance in an electrical circuit?

The unit used to measure resistance in an electrical circuit is the ohm. This unit is named after Georg Simon Ohm, who formulated Ohm's Law, which relates voltage, current, and resistance in a circuit. According to Ohm's Law, the resistance in a circuit can be determined by dividing the voltage across the circuit by the current flowing through it. Therefore, the ohm is a critical measurement for understanding how much opposition a particular component or circuit element provides to the flow of electric current.

Volt measures the potential difference, watt is a unit of power representing the rate of energy transfer, and ampere is the unit of electric current. Each of these units plays a unique role in electrical engineering, but when it comes specifically to resistance, the ohm is the standard measurement used.