Which device is specifically used to measure electrical current?

The device specifically used to measure electrical current is the ammeter. An ammeter is designed to measure the flow of electric charge in a circuit, expressed in amperes (A). It is connected in series with the circuit to accurately capture the current passing through. This measurement is crucial for diagnosing electrical systems, ensuring they operate within safe limits and for fulfilling electrical code requirements.

In contrast, other devices serve different purposes: a voltmeter measures electrical potential difference (voltage) across components, an ohmmeter measures resistance in ohms, and a wattmeter measures power consumption in watts. Each tool has its own specific role in electrical measurements, which is essential for comprehensive electrical troubleshooting and system design.