Nate Core Practice Test 2025 – 400 Free Practice Questions to Pass the Exam

A voltmeter measures voltage in an electrical circuit. Voltage, also known as electric potential difference, represents the force that pushes electric charges through a conductor. When a voltmeter is connected across two points in a circuit, it accurately indicates the difference in electric potential between those points. This measurement is crucial for understanding how much energy per unit charge is available to drive current through the circuit elements.

In contrast, other measurements such as current, resistance, and power do not pertain to voltage measurement. Current refers to the flow of electric charge, resistance is the opposition to that flow, and power represents the rate at which energy is used or generated in the circuit. Consequently, a voltmeter is specifically designed to measure voltage, making it a key instrument for analyzing and troubleshooting electrical circuits.