What is a multimeter?

• A. A device that stores electrical energy
• B. A versatile device that can measure various electrical properties.
• C. A device used to insulate wires
• D. A device that only measures current

Answer: (B)

A multimeter is a versatile handheld instrument that can measure several electrical properties, not just one. It combines the functions of a voltmeter, ammeter, and ohmmeter, so you can check voltage, current, resistance, and often continuity (and sometimes capacitance or frequency) in a circuit using a single device. This makes it indispensable for diagnosing and troubleshooting electrical problems, because you can switch modes to test different aspects of a circuit without swapping tools.

The other descriptions miss the core idea: storing energy describes devices like a capacitor, which isn’t a measuring tool; insulating wires is done with protective materials or tape, not a meter; and a device that only measures current lacks the broad testing capabilities of a multimeter.