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If a coil of 40 turns and area 4.0 cm^(...

If a coil of `40` turns and area `4.0 cm^(2)` is suddenly remove from a magnetic field, it is observed that a charge of `2.0xx10^(-4)C` flows into the coil. If the resistance of the coil is `80Omega`, the magnetic flux density in `Wb//m^(2)` is

A

0.5

B

`1.0`

C

1.5

D

`2.0`

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The correct Answer is:
B
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AAKASH INSTITUTE-ELECTROMAGNETIC INDUCTION-Assignment (SECTION - A)
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  6. A magnetic flux of 500 microweber passing through a 200 turn coil is r...

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

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

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

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

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

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

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

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  15. Dimensional formula of self-inductance is

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  16. A time varying magnetic flux passing through a coil is given by phi=xt...

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  17. A metalic ring is dropped down, keeping its plane perpendicular to a c...

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  18. Lights of a car become dim when the starter is opereterd. Why?

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  19. Coefficient of coupling between two coils of self-inductances L(1) and...

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