What instrument measures voltage?

The voltmeter is specifically designed to measure voltage, which is the electric potential difference between two points in a circuit. It is connected in parallel to the component across which the voltage is being measured, allowing it to accurately gauge the difference in electric potential. This instrument works by displaying the voltage on a scale, providing a clear reading of how much potential energy exists to drive current through a circuit.

While a multimeter can also measure voltage, its functionality extends beyond that to include current and resistance measurements as well. Therefore, the voltmeter is the direct instrument you would use specifically for measuring voltage. Other instruments like the ammeter measure current and the wattmeter measures power, making them unsuitable for measuring voltage directly.