Which device is utilized to measure electrical current?

An ammeter is specifically designed to measure electrical current in amperes. It is connected in series within the circuit to ensure it can measure the flow of current directly. The operation of an ammeter is based on the principle that it measures the charge movement through a conductor, providing a direct reading of the current flowing in the circuit.

In contrast, a voltmeter measures voltage, or electrical potential difference, across two points and is typically connected in parallel to the circuit. A wattmeter measures the power in watts being consumed by a circuit, taking into account both voltage and current, while an ohmmeter is used to measure resistance in ohms, functioning independently of current or voltage in a live circuit. This specialization of the ammeter makes it the appropriate choice for measuring electrical current.