When would you typically use a voltmeter?

A voltmeter is specifically designed to measure the electrical potential difference, or voltage, between two points in a circuit. This function is crucial in assessing whether the electrical components are operating within their specified voltage range. By connecting the voltmeter across the two points in question, the device provides a reading that indicates how much voltage is present, which can be vital for ensuring proper circuit function and safety.

The ability to accurately assess voltage at various points in the circuit allows electricians and technicians to diagnose issues, verify power supply levels, and ensure that equipment is receiving the correct voltage for optimal operation. While other instruments might be used for measuring current or resistance, the voltmeter's primary role is to provide a clear indication of voltage levels, making it an essential tool in electrical work.