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In a magnetic field of 0.05T, area of a ...

In a magnetic field of 0.05T, area of a coil changes from 101 `cm^(2)` to 100 `cm^(2)` without changing the resistance which is 2`Omega`. The amount of charge that flow during this period is

A

`2.5 xx 10^(-6)` C

B

`2 xx 10^(-6)` C

C

`10^(-6)` C

D

`8 xx 10^(-6)` C

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The correct Answer is:
A
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AAKASH SERIES-ELECTROMAGNETIC INDUCTION-EXERCISE-II
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  2. A rectangular coil of 20 turns and area of cross section 25 cm^(2) has...

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  3. In a magnetic field of 0.05T, area of a coil changes from 101 cm^(2) t...

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  4. A coil of 40Omega resistance has 100 turns and radius 6 mm is connecte...

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  5. A magnetic field of 5xx10^(-5) T is produced at a perpendicular distan...

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

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  9. The wing span of an aeroplane is 20 metre. It is flying in a field, wh...

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  10. A small piece of metal wire is dragged across the gap between the pole...

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  11. A copper disc of radius 0.1 m is rotated about its natural axis with 1...

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  12. A wheel with 10 metallic spokes each 0.5m long is rotated with a speed...

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  13. An e.m.f of 5 volt is produced by a self inductance, when the current ...

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  14. A coil has an inductance 0.05 H and 100 turns. Calculate the flux link...

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  15. A long solenoid has 1000 turns. When a current of 4A flows through it,...

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  16. A coil has a self inductance of 0.01H. The current through it is allow...

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  17. If a change in current of 0.01 A in one coil produces a change in magn...

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  18. The current in a coil is changed from 5A to 10A in 10^(-2)s. Then, an ...

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  19. Two coaxial solenoids are made by winding thin insulated wire over a p...

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  20. An emf induced in a secondary coil is 20000V when the current breaks i...

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