A multimeter is a device that can measure which electrical quantities?

• A. Voltage, amperes, and resistance
• B. Temperature and humidity
• C. Torque and speed
• D. Sound level

Answer: (B)

A multimeter is used to measure electrical quantities. The three fundamental measurements it is designed for are voltage, current, and resistance. Voltage reveals the potential difference in a circuit, current shows how much charge is flowing (measured in amperes), and resistance indicates how much a component opposes current (measured in ohms). You use the meter by selecting the proper setting: voltage for voltage, current for amperes, and resistance for resistance. Some meters offer extra features like continuity tests, diode checks, capacitance, or even temperature with a probe, but those are add-ons; the core purpose remains to quantify voltage, current, and resistance. The option listing these three quantities is the best match because it reflects the primary electrical measurements a standard multimeter provides. Environmental, mechanical, or acoustic properties such as temperature with humidity, torque and speed, or sound level are not typical electrical measurements from a basic multimeter.