What does a multimeter measure?

A multimeter is a versatile instrument commonly used in HVAC and electrical work to measure various electrical properties. The correct response indicates that a multimeter can measure voltage, current, and resistance.

Voltage is the electrical potential difference, current is the flow of electric charge, and resistance is the opposition to that flow. By measuring these three parameters, technicians can diagnose electrical issues in HVAC systems, ensuring proper operation and identifying potential problems related to electrical circuits.

While it's true that pressure, temperature, humidity, airflow, sound levels, and light intensity are important measurements in HVAC and other fields, they fall outside the capabilities of a standard multimeter. Each of those measurements typically requires specialized tools, such as pressure gauges for pressure, thermometers for temperature, hygrometers for humidity, anemometers for airflow, sound level meters for sound levels, and light meters for light intensity.