How is a voltmeter connected in the circuit to measure the potential difference between two points?

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Solution

To measure the potential difference between two points, a voltmeter should be connected in parallel to the points.

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Q. A voltmeter is always connected in ...... in the circuit to measure the potential difference between two points.

(a) What do you understand by the term "potential difference"?
(b) What is meant by saying that the potential difference between two points is 1 volt?
(c) 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?
(d) What is a voltmeter ? How is a voltmeter connected in the circuit to measure the potential difference between two points. Explain with the help of a diagram.
(e) State- whether a voltmeter has a high resistance or a low resistance. Give reason for your answer.

Q. A voltmeter of resistance 400 Ω is used to measure the potential difference across the 100 Ω resistor in the circuit shown in the figure (32-E24). (a) What will be the reading of the voltmeter? (b) What was the potential difference across 100 Ω before the voltmeter was connected?

How is a voltmeter connected in the circuit to measure the potential difference between two points?

Q. Question 5
How is a voltmeter connected in the circuit to measure the potential difference between two points?

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