What does a voltmeter specifically measure within an electrical system?

A voltmeter specifically measures voltage within an electrical system. It is designed to assess the electric potential difference between two points in a circuit. Voltage, often referred to as electrical potential difference, is what drives current through a circuit and is essential for understanding how electrical components operate.

When using a voltmeter, it's placed across components or sections of the circuit to provide a reading of the electrical potential. This measurement helps in diagnosing issues in electrical systems, ensuring that components are receiving the correct voltage, which is crucial for their performance and safety.

Understanding voltage is fundamental for anyone working in electrical fields, as it relates directly to how efficiently power can be delivered and managed within circuits. By knowing the voltage levels, electricians and technicians can ensure systems operate as intended and make necessary adjustments or repairs.