Which instrument is used to measure electrical current?

The instrument specifically used to measure electrical current is the ammeter. An ammeter is designed to measure the flow of electric charge in a circuit, typically expressed in amperes (A). It is connected in series with the circuit whose current is to be measured, allowing it to accurately gauge the amount of current flowing through the components.

In contrast, a voltmeter measures electrical potential difference (voltage) across two points in a circuit, and is connected in parallel with the components. An ohmmeter measures resistance in a circuit, useful for testing components like resistors, and it operates independently of the circuit’s power. A capacitance meter, on the other hand, measures the capacitance of capacitors, quantifying their ability to store charge. Each of these instruments serves a specific purpose in electrical measurement, but only the ammeter is meant for current measurement.