Which device is used to measure resistance?

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Multiple Choice

Which device is used to measure resistance?

Explanation:
Measuring resistance requires a device that determines how much current a component resists. An ohmmeter does exactly that. It uses a small internal source to apply a known voltage or current and then measures the result to calculate resistance, typically displayed as ohms. Because resistance is only meaningful in an unpowered circuit, you should disconnect the component from any power before testing. Other instruments have different jobs: a voltmeter measures voltage, an ammeter measures current, and a wattmeter measures power. Many multimeters include an ohm function for convenient resistance testing when the circuit is de-energized.

Measuring resistance requires a device that determines how much current a component resists. An ohmmeter does exactly that. It uses a small internal source to apply a known voltage or current and then measures the result to calculate resistance, typically displayed as ohms. Because resistance is only meaningful in an unpowered circuit, you should disconnect the component from any power before testing. Other instruments have different jobs: a voltmeter measures voltage, an ammeter measures current, and a wattmeter measures power. Many multimeters include an ohm function for convenient resistance testing when the circuit is de-energized.

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