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(a) What do you understand by the term '...

(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.

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LAKHMIR SINGH & MANJIT KAUR-ELECTRICITY -Exercise
  1. (a) State the relation between potential difference, work done and cha...

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  2. (a) Name a device that helps to measure the potential difference acros...

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  3. (a) What do you understand by the term ''potential difference''? (b)...

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  4. The work done in moving a unit charge across two points in an electric...

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  5. The device used for measuring potential difference is known as:

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  6. Which of the following units could be used to measure electric charge?

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  7. The unit for measuring potential difference is:

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  8. Calculate the number of electrons consituting one coulomb of charge.

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  9. Three 2V cells are connected in series and used as a battery in a circ...

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  10. The atoms of copper contain electrons and the atoms of rubber also con...

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  11. By what name is the physical quantity coulomb/second called?

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  12. What is the flow of charge called?

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  13. What actually travels through the wires when you switch on a light?

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  14. Which particles constitute the electric current in a metallic conducto...

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  15. (a) In which direction does conventional current flow around a circuit...

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  16. Which of the following equation shows the correct relationship between...

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  17. What is an electric current ? Give its SI unit.

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  18. (a) How many milliamperes are there in 1 ampere? (b) How many microa...

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  19. Which of the two is connected in series: ammeter or voltmeter?

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  20. Compare how an ammeter and a voltmeter are connected in a circuit.

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