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A magnet is allowed to fall towards a me...

A magnet is allowed to fall towards a metal ring. During the fall Its accelertion is

A

Equal to g

B

Greater than g

C

Less than g

D

Equal to the product of g and the radius of the ring

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH INSTITUTE-ELECTROMAGNETIC INDUCTION-Assignment (SECTION - A)
  1. A circular wire loop of radius r is placed in a region of uniform magn...

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  2. When a non magnetic metallic strip is moved away from between the pole...

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  3. A magnet is allowed to fall towards a metal ring. During the fall Its ...

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  4. A coil having 500 square loops each of side 10 cm is placed normal to ...

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  5. The coefficient of mutual induction between two circuits is equal to t...

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  6. The back emf in a DC motor is maximum when,

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  7. If the radius of a coil is changing at the rate of 10^(-2) unit in a n...

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  8. If a coil of 40 turns and area 4.0 cm^(2) is suddenly remove from a m...

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  9. The core of transformer is laminated so that

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  10. Two coil are placed close to each other. The mutual inductance of the ...

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  11. A magnetic flux of 500 microweber passing through a 200 turn coil is r...

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  12. A coil of area 0.1m^(2) has 500 tums. After placing the coil in a magn...

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  13. Two circular coils have their centres at the same point. The mutual in...

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  14. When a battery is connected across a series combination of self induct...

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  15. In a uniform magneitc field of induced B a wire in the form of a semic...

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  16. A metal conductor of length 1m rotates vertically about one of its end...

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  17. A copper disc of radius 0.1 m is roated about its centre with 20 revol...

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  18. Two coils of self-inductance 2mH and 8 mH are placed so close togethe...

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  19. The equivalent quantity of mass in electricity is

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  20. Dimensional formula of self-inductance is

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