What do ohms measure?

Ohms are the unit of measurement for electrical resistance, which is a fundamental concept in electrical circuits. When an electrical current flows through a conductor, resistance determines how much current will flow for a given voltage, according to Ohm's Law. Ohm's Law states that Voltage (V) equals Current (I) multiplied by Resistance (R) (V = I × R).

Understanding resistance is crucial for comprehending how electrical systems operate. High resistance in a circuit impedes the flow of current, while lower resistance allows more current to pass through. This measurement is essential for electricians and engineers when designing and troubleshooting electrical systems to ensure that components operate within safe and efficient parameters. Resistance impacts overall circuit functionality, safety, and performance, making it a vital concept in electrical training.