A multimeter is a device that can measure which of the following?

• A. Voltage, current and resistance
• B. Temperature and humidity
• C. Pressure only
• D. Frequency only

Answer: (A)

A multimeter is used to quantify electrical properties in circuits, with its primary functions being to measure voltage, current, and resistance. Voltage tells you how much electrical potential difference exists across two points, which helps you see if a circuit is powered and at what level. Current measures the rate of flow of electric charge through a path, informing you how much load is drawing from the source. Resistance measures how much a component or path resists current, which is essential for diagnosing components or verifying their values. Together, these three measurements cover the core checks you’d perform on most electrical problems.

Environmental readings like temperature and humidity, as well as mechanical measurements like pressure, aren’t what a typical multimeter is designed to do. Some meters offer extra features, such as measuring frequency or temperature, but those are additions rather than the standard trio. The best, most universal set of readings a basic multimeter provides is voltage, current, and resistance.