What instrument would you use to measure resistance?

To measure resistance, the most appropriate instrument is an ohmmeter. An ohmmeter is specifically designed to measure the resistance of a circuit or component in ohms. It works by passing a small current through the resistance to determine how much opposition the component offers to the flow of electricity. This capability is crucial in diagnosing electrical issues, checking the integrity of components, and ensuring that circuits function properly.

While a voltmeter measures voltage and an ammeter measures current, neither of these instruments can directly measure resistance. A multimeter, which can serve multiple functions including measuring voltage, current, and resistance, can also measure resistance. However, when directly asked for an instrument specifically dedicated to measuring resistance, the ohmmeter is the best choice.

Thus, the focus on using an ohmmeter emphasizes its primary role in testing resistance, making it indispensable for electrical installation and maintenance tasks.