What tool is commonly used to measure voltage in electrical circuits?

A voltmeter is the specialized tool designed to measure voltage in electrical circuits. It operates by connecting across two points in a circuit, providing a reading that indicates the electrical potential difference between those points. This measurement is crucial for assessing the operation of electrical systems, troubleshooting issues, and ensuring safe and effective functioning of equipment.

Other tools, while important in their own right, serve different specific functions. An ammeter measures current, allowing technicians to see the flow of electricity through a conductor. An ohmmeter is used to measure resistance in a circuit. A wattmeter measures power, which is a product of voltage and current, rather than voltage itself. Understanding the distinct roles of these instruments emphasizes the importance of selecting the correct tool for effective measurement and analysis in electrical work.