How does a digital multimeter represent resistance?

A digital multimeter represents resistance in ohms (Ω), which is the standard unit for measuring resistance in electrical circuits. The functionality of a multimeter allows it to determine how much a component or circuit opposes the flow of electric current. When a multimeter is set to the resistance measuring mode, it applies a small voltage to the component and measures the resulting current that flows through it. Using Ohm's Law (V = IR), the multimeter calculates the resistance value based on the applied voltage and the current flow.

Understanding resistance is crucial in automotive diagnostics, as it can indicate whether electrical components, such as sensors or wiring, are functioning properly or if there is a fault that may require attention. Using ohms as a measurement provides a clear and standardized way to convey this information in the context of electrical troubleshooting.