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What is the self-inductance of solenoid ...

What is the self-inductance of solenoid of length 31.4 cm, area of cross-section `10^(-3)m^(2)` and total number of turn `10^(3)`?

A

4 mH

B

4H

C

40 H

D

0.4 H

Text Solution

Verified by Experts

The correct Answer is:
A
Given, `A=10^(-3)m^(2)`
`l=31.4cm=31.4xx10^(-2)m and n=10^(3)`
Magnetic flux `phi=Li`
`BA Li implies mu_(0) niA=Li`
`L=mu_(0)n//lA=(4pixx10^(-7)xx10^(3)xx10^(-3))/(31.4xx10^(-2))=4mH`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-ELECTROMAGNETIC INDUCTION-Example 1
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  2. The inductance of a coil is proportional to

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

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

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  9. According to phenomenon of mutual inductance,

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

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

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

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

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

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

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  20. An air-cored coil has a self-inductance of 0.1 H. A soft iron core of ...

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