Which device is primarily used to measure voltage in an electrical circuit?

The voltmeter is specifically designed to measure the electrical potential difference, or voltage, across two points in an electrical circuit. When connected in parallel to the components whose voltage is being measured, it provides a reading that indicates how much electrical energy is available to move charges between those points. Voltameters are essential tools for electricians and technicians, as they help diagnose electrical issues and ensure that circuits operate within their designated voltage ranges.

While other devices like a multimeter can indeed measure voltage alongside other parameters (such as current and resistance), the primary function of a voltmeter is distinct and essential for accurate voltage measurement. This specialized design makes the voltmeter the most appropriate choice when the specific task is to assess voltage itself. Other devices, such as the ohmmeter and ammeter, are used for measuring resistance and current, respectively, and do not focus on voltage measurement.