Which device is primarily used for measuring electrical current?

The device primarily used for measuring electrical current is the ammeter. This instrument specifically measures the flow of electric charge in a circuit, quantified in amperes. When connected in series with a circuit, it allows for direct measurement of current, enabling technicians to assess the amount of electricity flowing through a particular component or circuit as part of troubleshooting or performance evaluations.

While a voltmeter measures voltage (the electrical potential difference), and an ohmmeter measures resistance within a circuit, the ammeter is uniquely designed for current measurement. A multimeter can perform a variety of measurements, including current, voltage, and resistance, but it is not solely dedicated to current measurement. Therefore, for the specific task of measuring electrical current, the ammeter is the most appropriate tool.