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A solenoid of inductance 2 H carries a c...

A solenoid of inductance 2 H carries a current 1 A. what is the magnetic energy stored in a solenoid?

A

`2J`

B

`1J`

C

`4J`

D

`5J`

Text Solution

Verified by Experts

The correct Answer is:
B
By energy stored in an inductor, `U=(1)/(2)Li_(0)^(2)`
(L=inductance of inductor, `i_(0)`=current)
where, `L=2H,i_(0)=1A,U=(1)/(2)xx1^(2)=1J`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-ELECTROMAGNETIC INDUCTION-Example 1
  1. A coil of wire of a certain radius has 600 turns and a self-inductance...

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  2. Two coils have a mutual inductance 0.005 H. The current changes in the...

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  3. A solenoid of inductance 2 H carries a current 1 A. what is the magnet...

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  4. A solenoid 30 cm long is made by winding 2000 loops of wire on an iron...

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  5. The inductance of a coil is proportional to

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  6. What is the self-inductance of solenoid of length 31.4 cm, area of cro...

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  7. A current I = 10 sin (100pi t) amp. Is passed in first coil, which ind...

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  8. What is the self-inductance of an air-core solenoid 1 m long, diameter...

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  9. A coil of inductance 0.2 H and 1.0 W resistance is connected to a 90 V...

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  10. In a current carrying long solenoid, the field produced does not depen...

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  11. Two coils of inductances L(1), and L(2) are linked such that their mut...

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  12. According to phenomenon of mutual inductance,

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  13. Two coil are placed close to each other. The mutual inductance of the ...

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  14. A coil is wound as a transformer of rectangular cross section. If all ...

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  15. A coil of wire of a certain radius has 100 turns and a self inductance...

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  16. Two inductors of inductance L each are connected in series with opposi...

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  17. How much mutual inductance will be produced (in joule) if the change i...

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  18. Two inductors each of inductance L are joined in parallel. Their equiv...

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  19. The number of turns of primary and secondary coils of a transformer ar...

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  20. A coil resistance R and inductance L is connected to a battery of emf ...

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