Which of the following best describes the function of a multimeter?

A multimeter is a versatile instrument widely used in electrical diagnostics and troubleshooting. The function that best describes a multimeter is its ability to measure voltage, current, and resistance. These three measurements are critical for understanding electrical circuits and diagnosing issues within them.

When measuring voltage, the multimeter can assess the potential difference between two points in a circuit, which is essential for ensuring that components are operating within their specified voltage ranges. When measuring current, the multimeter can determine the flow of electric charge, which helps to identify whether there is an overload or short circuit present. Lastly, when measuring resistance, the multimeter can check the functionality of components like resistors and ensure that connections are intact.

The capability to perform all three functions allows technicians and engineers to diagnose problems accurately and efficiently, making the multimeter an indispensable tool in the field of electronics and electrical engineering.