What does a digital multimeter measure in electrical circuits?

A digital multimeter is a versatile tool used in electrical circuits that is capable of measuring multiple electrical parameters. The correct choice highlights its ability to measure voltage, current, and resistance, making it an essential device for troubleshooting and testing electrical systems.

When measuring voltage, the multimeter connects in parallel with the circuit, allowing it to read the potential difference between two points. For current measurements, the device must be connected in series with the circuit, enabling it to measure the flow of electric charge. Additionally, when measuring resistance, the multimeter provides a reading of the opposition to current flow in a component or circuit, which is crucial for diagnosing circuit conditions.

While energy consumption is a vital parameter in electrical applications, a standard digital multimeter does not directly measure this quantity. Instead, energy consumption is generally calculated using voltage, current, and the duration of use. Therefore, the capability of a digital multimeter to measure multiple fundamental electrical properties establishes its significance in the field of electrical work and its use in various applications.