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According to the right - hand thumb rul...

According to the right - hand thumb rule , whose direction is indicated by the thumb ?

A

Electric current

B

Magnetic field

C

Magnetic force

D

Motion of a conductor

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The correct Answer is:
A
Electric current
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KUMAR PRAKASHAN-MAGNETIC EFFECTS OF ELECTRIC CURRENT -CHOOSE THE CORRECT OPTION FROM THOSE GIVEN BELOW EACH QUESTIONS:
  1. Who discovered the magnetic effect of an electric current ?

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  2. With the help of which law/rule can the direction fo a magnetic field...

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  3. According to the right - hand thumb rule , whose direction is indicat...

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  4. The magnetic field produced by a straight conducting wire on passi...

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  5. What is the shape of the field line of a magnetic field passing t...

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  6. Whose magnetic field is like the magnetic field or a bar magnet ?

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  7. Who discovered electromagnetic induction ?

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  8. What is the direction of the magnetic force acting on a current - c...

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  9. How is a current - carrying wire placed in a magnetic field so that...

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  10. State in which of the followig cases, the induced current in the l...

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  11. Which instrument is used to convert electrical energy into mechanic...

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  12. On which principle does the electric generator work ?

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  13. The magnitude of the AC voltage used in India is…….and its frequency...

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  14. A wire with…….insulation is used for earthing,.

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  15. Which type of current is obtained from a battery ?

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  16. Which instrument is used to know the presence of an electric current...

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  17. A fuse wire is a/an……. .

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  18. …………..is used to find the direction of a current induced in a circu...

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  19. How many times in one second does an AC with frequency 50Hz change it...

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  20. At the centre of which of the following four circular rings is the...

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