Which function of a digital multimeter (DMM) is used to measure current flow?

The function of a digital multimeter (DMM) that is specifically designed to measure current flow is the DC Amps setting. When measuring current, the DMM is used in series with the circuit so that the current flowing through the circuit passes directly through the meter. This allows the multimeter to accurately capture the flow of electric current as it is being consumed by a component or circuit element.

When using the DC Amps setting, the multimeter provides a readout in amperes, which quantifies the amount of electric charge that passes through a conductor in a given time. This is an essential parameter in diagnosing electrical issues, as it helps determine if components are operating within their specified current ranges.

Other functions of the DMM, such as measuring DC volts, resistance, or frequency, serve different purposes and do not measure current directly. While they are all important electrical properties, each function requires a different setup and understanding of the electrical circuit.