Q16 of 330 Page 6

What is meant by saying that the potential difference between two points is 1 volt?

One volt is defined as the work done by one joule to move a charge of one coulomb from one place to another.


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

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

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What is the potential difference between the terminals of a battery if 250 joules of work is required to transfer 20 coulombs of charge from one terminal of battery to the other?

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What is the voltmeter? How is a voltmeter connected in the circuit to measure the potential difference between two points? Explain with the help of a diagram.