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What is a energy required to build up a ...

What is a energy required to build up a current of 1 A in an inductor of 20 mH?

A

10mj

B

20mj

C

20j

D

10j

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CHETANA PUBLICATION-Electromagnetic Induction-EXERCISE
  1. Two inductor coils with inductances 10 mH and 20 mH are connected in s...

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  2. A current through a coil of self inductance 10 mH increases from 0 to ...

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  3. What is a energy required to build up a current of 1 A in an inductor ...

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  4. Lenz's law of consequence of the law of conservation of?

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  5. A cylindrical bar magnet is kept along the axis of a circular coil. If...

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  6. A magnet is brought towards a coil (i) speedily (ii) slowly, then the ...

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  7. A square coil having500 turnseach of side10cm is placed normal to the ...

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  8. A coil having an area 2m^2 is placed in a magnetic field which changes...

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  9. In a circuit with a coil of resistance 2 ohms, the magnetic flux chang...

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  10. A rectangular coil of 20 turns and area of cross section 25 sqcm has a...

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  11. The magnetic flux linked with a coil, in webers is given by the equati...

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  12. A coil has an area of 0.05 m^2 and it has 800 turns. It is placed perp...

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  13. A 10 metre wire kept in east-west direction is falling with velocity 5...

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

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  15. A conducting wire is moving towards right in a magneticfield B.The dir...

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

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  17. A 50 mH coil carries a current of 2 ampere. The energy stored in joule...

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  18. The current passing through a choke coil of 5 Henry is decreasing at t...

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  19. In what form is the energy stored in an inductor

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  20. The average e.m.f. induced in a coil in which the current changes from...

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