What can a multimeter measure?

• A. Only current
• B. Voltage, current, and resistance
• C. Inductive reactance only
• D. Capacitance only

Answer: (B)

A multimeter is a versatile instrument designed to measure various electrical parameters, making it a crucial tool for anyone working with electrical circuits. It can measure voltage (both AC and DC), current (again, both AC and DC), and resistance.

Voltage measurement allows users to check the potential difference between two points in a circuit, determining if a circuit is functioning correctly or diagnosing issues. Current measurement enables monitoring the flow of electricity through a component or circuit, which is essential for understanding how much power is being used or identifying if there’s any overload. Resistance measurement is useful for testing components like resistors and verifying if they are functioning within specified limits.

The ability to measure these three key parameters equips technicians with the data needed for troubleshooting and ensuring systems operate within their designed specifications. This blend of functionalities is what distinguishes a multimeter from other tools that are specialized for single measurements, such as those designed solely for measuring inductive reactance or capacitance.