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The current decays from 5A to 2A in 0.01...

The current decays from `5A` to `2A` in `0.01 s` in a coil. The emf induced in a coil nearby it is `30V`. The mutual inductance between the coils is

A

1.0 H

B

0.1 H

C

0.001 H

D

10 H

Text Solution

Verified by Experts

The correct Answer is:
B
`e=-M((di)/(dt))39.E=Lxx(di)/(dt)`
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NARAYNA-ELECTROMAGNETIC INDUCTION-EXERCISE-1 (H.W)
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  4. A flip coil consits of N turns of circular coils which lie in a unifo...

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  5. A conductor AB of length l moves in x y plane with velocity vec(v) = v...

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  6. To measure the field 'B' between the poles of an electronmagnet, a sma...

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  7. A thin circular ring of area A is perpendicular to uniform magnetic fi...

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  8. A short-circuited coil is placed in a time-varying magnetic field. Ele...

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  9. A train is moving towards north with a speed of 25 m/s. if the vertic...

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  10. A conducting square loop of side L and resistance R moves in its to on...

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  11. A metal rod moves at a constant velocity in a direction perpendicular ...

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  12. A thin flexible wire of length L is connected to two adjacent fixed po...

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  13. A coil has an inductance of 0.05 H and 100 turns and 0.02 A current i...

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  14. A current of 2A is increasing at a rate of 4A//s through a coil of ind...

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  15. The current decays from 5A to 2A in 0.01 s in a coil. The emf induced ...

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  16. A varying current in a coil change from 10A to 0A in 0.5 sec. If the a...

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  17. An air cored solenoid is of length 0.3 m, area of cross section 1.2 xx...

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  18. A solenoid of length 50 cm with 20 turns per cm and area of cross sect...

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  19. The current in a coil is changed from 5A to 10 A in 10^(-2) s. An emf ...

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  20. A small square loop of wire of side l is placed inside a large square ...

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