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A rectangular coil of 200 turns and area...

A rectangular coil of `200` turns and area `100 cm^(2)` is kept perpendicular to a uniform magnetic field of induction `0.25` tesla. If the field is reversed in direction in `0.01` second, the average induced emf in the coil is

A

`10^6 V`

B

`10^4` V

C

`10^2` V

D

zero

Text Solution

Verified by Experts

The correct Answer is:
C
`e=(-NA(B_2-B_1))/(time)=(-NA(-B-B))/(time)=(2NAB)(time)`
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NARAYNA-ELECTROMAGNETIC INDUCTION-EXERCISE-1 (H.W)
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  2. A magnetic flux of 500 microweber passing through a 200 turn coil is r...

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  3. A rectangular coil of 200 turns and area 100 cm^(2) is kept perpendicu...

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  4. A coil having an area 2m^(2) is placed in a magnetic field which chang...

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  5. A flip coil consits of N turns of circular coils which lie in a unifo...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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