Electricity Model Question Paper

8th Standard EM

    Reg.No. :
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Science

Time : 00:45:00 Hrs
Total Marks : 30
    3 x 1 = 3
  1. When an ebonite rod is rubbed with fur, the charge acquired by the fur is

    (a)

    negative

    (b)

    positive

    (c)

    partly positive and partly negative

    (d)

    None of these

  2. An electroscope has been charged by induction with the help of charged glassrod. The charge on the electroscope is

    (a)

    negative

    (b)

    positive

    (c)

    both positive and negative

    (d)

    None of the above

  3. Fuse is

    (a)

    a switch

    (b)

    a wire with low resistance

    (c)

    a wire with high resistance

    (d)

    a protective device for breaking an electric circuit

  4. 4 x 1 = 4
  5. _______takes place by rubbing objects together.

    ()

      

  6. The body which has lost electrons becomes ________

    ()

      

  7. _____ has a thin metallic filament that melts and breaks the connection when the circuit is overheated

    ()

      

  8. Three bulbs are connected end to end from the battery. This connection is called _______

    ()

      

  9. 4 x 1 = 4
  10. The charge acquired by an ebonite rod rubbed with a piece of flannel is negative.

    (a) True
    (b) False
  11. A charged body induces an opposite charge on an uncharged body when they are brought near.

    (a) True
    (b) False
  12. Water can conduct electricity

    (a) True
    (b) False
  13. In parallel circuit, current remains the same in all components.

    (a) True
    (b) False
  14. 4 x 1 = 4
  15. When a glass rod is rubbed with silk cloth both get charged.

  16. When you touch the metal disc of an electroscope with a charged glass rod the metal leaves get diverged.

  17. In an electroscope the connecting rod and the leaves are all metals.

  18. One should not use an umbrella while crossing an open field during thunderstorm

  19. 3 x 2 = 6
  20. How charges are produced by friction?

  21. What is electric circuit?

  22. Give some uses of electroplating.

  23. 3 x 3 = 9
  24. Explain three ways of charge transfer.

  25. How lightning takes place?

  26. What is electroplating? Explain how it is done.

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