Which meter function is used to measure resistance?

Which meter function is used to measure resistance?

• A. Ohmmeter
• B. Voltmeter
• C. Ammeter
• D. Continuity tester

Answer: (A)

Measuring resistance is done with an ohmmeter. An ohmmeter supplies a small test current through the component and measures the resulting voltage (or vice versa) to calculate resistance, using Ohm’s law. That direct, numeric measurement is what distinguishes it from other meters: a voltmeter reads voltage, an ammeter reads current in series, and a continuity tester only checks whether a circuit path exists. For accurate readings, ensure the circuit is de-energized and the component is isolated from the circuit so there are no parallel paths affecting the result. The display will show resistance in ohms (or kilohms).

Measuring resistance is done with an ohmmeter. An ohmmeter supplies a small test current through the component and measures the resulting voltage (or vice versa) to calculate resistance, using Ohm’s law. That direct, numeric measurement is what distinguishes it from other meters: a voltmeter reads voltage, an ammeter reads current in series, and a continuity tester only checks whether a circuit path exists. For accurate readings, ensure the circuit is de-energized and the component is isolated from the circuit so there are no parallel paths affecting the result. The display will show resistance in ohms (or kilohms).