Question

The potential difference between two points in an electric circuit is 1 volt. What does it mean? Name a device that helps to measure the potential difference across a conductor.

Answer 1

The potential difference between two points is 1 volt means that if a charge of 1 coulomb is moved Ilom one point to the other, 1 joule of work is required. The potential difference across a conductor is measured by means of an instrument called the "voltmeter."