What unit is used to measure resistance in a circuit?

Resistance in a circuit is measured in Ohms. This unit is named after the German physicist Georg Simon Ohm, who formulated Ohm's Law, a fundamental principle in electrical engineering. Ohm's Law states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance.

The relevance of Ohms in practical applications can be seen in various electrical and electronic systems where controlling current flow and ensuring components operate within safe limits are essential. Utilizing Ohms helps technicians and electricians diagnose issues in circuits, determine appropriate component ratings, and design systems that function correctly under specified electrical conditions.