Potential difference is measured in [[1]] by using a voltmeter placed in parallel across a component.

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Detailed Solution

Potential difference is measured in

Volt

by using a voltmeter placed parallel across a component.
The SI unit of potential difference is

volt,

a device used for measuring the electrical potential difference between two points in an electrical circuit. A voltmeter is a connected parallel with a circuit element. To measure the voltage drop across it must be designed to draw very little current from the circuit so that it does not extensively alternate the circuit it is measuring.

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