What device is specifically designed to measure voltage?

The voltmeter is specifically designed to measure voltage in an electrical circuit. It provides a way to determine the electrical potential difference between two points. Voltmeters can be found in both analog and digital formats, and they often have different settings to measure various ranges of voltage.

In the context of a circuit, measuring voltage is crucial for understanding how much electric potential is available to push current through a conductor and to identify issues within circuits, such as shorts or opens.

Other devices mentioned serve different purposes. An ammeter measures current, which is the flow of electric charge, while an ohmmeter measures resistance, indicating how much a component resists the flow of current. A wattmeter measures power, which is the rate at which energy is transferred or converted, involving both voltage and current in its calculations. Therefore, each device has its specific role in electrical measurements, with the voltmeter being the designated instrument for measuring voltage.