Q15 of 330 Page 5

Name a device that helps to measure that potential difference across a conductor.

Voltmeter is an apparatus used to measure the potential difference or electric potential difference between two points in an electric circuit.


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14

State the relation between potential difference, work done and charge moved.

 14

Calculate the work done in moving a charge of 4 coulombs from a point at 220 volts to another point at 230 volts.

 15

How much energy is transferred by a 12 V power supply to each coulomb of charge which it moves around a circuit?

 16

What do you understand by the term “potential difference”?