What is used to measure the flow of electric current?

The device used to measure the flow of electric current is a galvanometer. A galvanometer specifically detects and measures the amount of current flowing through a conductor. It operates on the principle that an electric current passing through a coil creates a magnetic field, which causes a needle or pointer to move in relation to a scale, indicating the current's strength.

While an ohmmeter measures resistance, a voltmeter measures voltage between two points in a circuit, and an inductor is a passive electrical component that stores energy in a magnetic field. These tools serve different purposes and are not designed for current measurement, making the galvanometer the appropriate choice for this function.