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An idduced emf is produced when a magnet...

An idduced emf is produced when a magnet is plunged into a coil. The magnitude of the induced emf is independent of

A

the speed with which the magnet is moved

B

the number of turns of the coil

C

the resistivity of turns of the coil

D

the strength of the magnet

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The correct Answer is:
C
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LAKHMIR SINGH & MANJIT KAUR-MAGNETIC EFFECT OF ELECTRIC CURRENT -Exercise
  1. An electric generator converts :

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  2. A d.c. generator is based on the priciple of :

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  3. An idduced emf is produced when a magnet is plunged into a coil. The m...

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  4. The frequency of direct current (d.c.) is :

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  5. The frequency of alternating current (a.c.) supply in India is :

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  6. When the magnet shown in the diagram below is movoing towards the co...

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  7. If you hold a coil of wire next to a magnet,no current will flow i...

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  8. The wire in Figure below is being moved downwards through the mag...

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  9. Two coils A and B of insulated to wire are kept close to each ...

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  10. A portable radio has a built in transformer so that it can work f...

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  11. What name is given to the device which automatically cuts off the ...

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  12. What is the capacity of an electric fuse used in (i) lighting circuit ...

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  13. Given the symbol of an electric fuse used in circuit diagrams.

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  14. State whether the following statements are ture of false: (a) A wi...

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  15. What is the advantage of the third wire of each connection in domestic...

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  16. List the colours of the three wires in the cable connected to the p...

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  17. If fuse of 250 mA, 500 mA, 1 A, 5 A, and 10 A were available, which ...

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  18. When does an electric short-circuit occur?

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  19. In which wire in a A.C. Housing circuit is the swicth introduced...

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  20. In household circuits, is a fuse wire connected in series or in parall...

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