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A coil of area 0.1m^(2) has 500 tums. Af...

A coil of area `0.1m^(2)` has 500 tums. After placing the coil in a magnetic field of strength `4xx10^(-4)Wb//m^(2)` it is rotated through `90^(@)` in 0.1 s. The average emf induced in the coil is

A

0.2 volt

B

0.1 volt

C

0.05 volt

D

0.012 volt

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The correct Answer is:
A
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AAKASH INSTITUTE-ELECTROMAGNETIC INDUCTION-Assignment (SECTION - A)
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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 coil of area 0.1m^(2) has 500 tums. After placing the coil in a magn...

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

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

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

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

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

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

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  10. The equivalent quantity of mass in electricity is

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  11. Dimensional formula of self-inductance is

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

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

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

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

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  16. There is a uniform magnetic field directed perpendicular and into the ...

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  17. A square loop of wire with side length 10 cm is placed at angle of 45^...

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  18. A uniformly wound solenoid coil of self inductance 1.8xx10^(-4)H and r...

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  19. The magnitude opf the earth's magnetic field at a place is B(0) and th...

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  20. Two parallel rails of a railway track insulated from each other and wi...

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