A Digital Multimeter is used to measure which of the following in electrical circuits?

• A. Electrical values (voltage, current, resistance)
• B. Temperature
• C. Airflow
• D. Refrigerant pressure

Answer: (A)

Electrical measurements in circuits—voltage, current, and resistance—are what a digital multimeter quantifies. Voltage tells you the electrical potential difference, showing how much push electrons have. Current measures the flow of electrons through a conductor, and resistance indicates how much a component opposes that flow, helping you understand how much current a given voltage will produce. A multimeter has modes to read these values: you place it across a component or supply to measure voltage, insert it in series to measure current, and use its resistance setting with the circuit powered off to measure resistance.

The other options aren’t readings a standard digital multimeter provides in circuit work: temperature requires a thermometer or temperature sensor, airflow needs an anemometer, and refrigerant pressure requires a pressure gauge. In the context of electrical circuits, the digital multimeter is used to measure electrical values—voltage, current, and resistance.