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Choose the incorrect statement....

Choose the incorrect statement.

A

Fleming's right-hand rule is a simple rule to know the direction of induced current.

B

The right-hand thumb rule is used to find the direction of magnetic fields due to current -carrying conductors.

C

The difference between the direct and alternating currents is that the direct current always flows in one direction by the alternating current its direction periodically.

D

In India, the AC changes direction after every 1/50 second.

Text Solution

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The correct Answer is:
D
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ZEN PUBLICATION-MAGNETIC EFFECTS OF ELECTRIC CURRENT -Additional question section (Multiple choice question)
  1. Commercial electric motors do not use

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  2. Choose the incorrect statement.

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  3. The strength of the magnetic field around an infinite current carrying...

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  4. The right-hand thump rule was stated by

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  5. Who was the first to observe the magnetic effect of electric current ...

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  6. Who gave the principle of electromagnetic induction ?

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  7. Which instrument detects the presence of electric current in a circui...

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  8. Electromagnetic induction occurs when

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  9. The phenomenon of electromagnetic induction is

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  10. No force acts on a current-carrying conductor when it is placed

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  11. The device used for producing electric current is called

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  12. Which of the following statements is false ?

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  13. According to the right-hand thumb rule, thmb indicates the direction o...

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  14. The direction of a magnetic field can be determined using

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  15. The magnetic field at the centre of the current carrying coil :

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  16. Which of the following has a magnetic field like that of a bar magnet...

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  17. In which of the following cases is no current induced in the loop ?

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  18. Which of the four rings has the strongest magnetic field at its cent...

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  19. The strength of the magnetic field produced in a current-carrying stra...

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  20. Choose the correct option. The magnetic field inside a long straig...

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