What is a measuring instrument used for current, voltage, and resistance?

A multimeter is a versatile measuring instrument that can measure current, voltage, and resistance, which makes it an essential tool in electrical and electronic applications. It is often used by technicians and engineers to troubleshoot circuits, test electrical components, and ensure devices are functioning correctly.

The ability of a multimeter to measure all three parameters—current (in amperes), voltage (in volts), and resistance (in ohms)—in one device significantly enhances its utility compared to using separate instruments for each measurement. This multifunctionality allows for greater efficiency and precision when diagnosing electrical issues.

In contrast, an ammeter is specifically designed to measure electrical current, while a voltmeter is intended solely for measuring voltage. An oscilloscope, although a powerful tool for visualizing electrical waveforms over time, does not provide a direct reading of resistance. Thus, the multimeter stands out as the most comprehensive instrument among the choices for measuring current, voltage, and resistance.