Which device is used to measure potential difference?

The device used to measure potential difference is a voltmeter.

A voltmeter measures the voltage between two points in an electric circuit, indicating how much work is done per unit charge to move electrons between those points.

Key characteristics of a voltmeter:

• It is always connected in parallel across the component.
• It has high resistance to ensure it does not significantly affect the current in the circuit.

The reading on a voltmeter is expressed in volts (V).

In practical applications, voltmeters are used in electrical testing, circuit design, and troubleshooting to ensure proper voltage levels.