Which unit is used to measure electrical resistance?

The Ohm is the unit that measures electrical resistance. Resistance is a fundamental property of electrical circuits that determines how much current will flow when a voltage is applied. According to Ohm's Law, which states that the current (measured in Amperes) in a circuit is directly proportional to the voltage (measured in Volts) and inversely proportional to the resistance (measured in Ohms), it becomes clear how resistance influences electrical behavior.

In practical terms, a higher resistance means that less current will flow at a given voltage, while a lower resistance allows more current to pass. Understanding this relationship is crucial in various applications, such as designing circuits, diagnosing electrical problems, and ensuring safety in electrical installations. Thus, the Ohm serves as the definitive unit for quantifying this critical electrical characteristic.