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A metal ring is held horizontally and ba...

A metal ring is held horizontally and bar magnet is dropped through the ring with its length along the axis of the ring. The acceleration of the falling magnet

A

is equal to g

B

is less than g

C

is more than g

D

depends on the diameter of ring and length of magnet

Text Solution

Verified by Experts

The correct Answer is:
B

Induced e.m.f. in the ring opposes the motion of the magnet.
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DISHA PUBLICATION-ELECTROMAGNETIC INDUCTION -EXERCISE - 1 : Concept Builder
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  2. A metal ring is held horizontally and bar magnet is dropped through th...

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  4. A rectangular coil of 20 turns and area of cross-section 25 cm^(2) has...

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  7. The magnetic flux (in weber) linked with a coil of resistance 10 Omega...

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  8. Two different wire loops are concentric and lie in the same plane. The...

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  9. A coil of area 100 cm^(2) having 50turns is perpendicular to a magneti...

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  10. Two identical circular loops of metal wire are lying on a table withou...

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  11. Consider the situation shown in figure. If the switch is closed and af...

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  12. A magnetic field of 2xx10^(-2)T acts at right angles to a coil of area...

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  13. A rectangular coil of 100 turns and size 0.1mxx0.05m is placed perpend...

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  14. the inductance of a closed-packed coil of 400 turns is 8mH. A current ...

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  15. The magnetic flux through a circuit of resistance R changes by an amou...

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  16. A conducting wire frame is placed in a magnetic field which is directe...

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  17. A coil having an area A(0) is placed in a magnetic field which changes...

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  18. A horizontal telegraph wire 0.5 km long runing east and west in a part...

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  19. A coil having n turns and resistance R Omega is connected with a galva...

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  20. Two coils X and Y are linked such that emf E is induced in Y when the ...

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