Which tool is commonly used for measuring electrical current in a circuit?

The ammeter is specifically designed for measuring electrical current in a circuit. It is connected in series with the load to ensure that all the current flowing through the circuit also flows through the ammeter, allowing it to provide an accurate reading of the current in amperes. This tool is essential for diagnosing issues in electrical systems and ensuring that current levels are within the safe operating range for the components being used.

While a voltmeter measures voltage and is useful for determining electrical potential difference across a component or circuit, and an ohmmeter is used to measure resistance, they do not measure current. A multimeter can measure voltage, current, and resistance, functioning as a versatile tool; however, when specifically addressing the measurement of electrical current alone, the ammeter is the precise instrument used for that purpose.