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A coil of 100 turns carries a current of...

A coil of `100` turns carries a current of `5mA` and creates a magnetic flux of `10^(-5)`weber. The inductance is

A

0.2 mH

B

2.0 mH

C

0.02 mH

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
C
Using `L=phi/(Ni)`, we get
`L=10^-5/(100xx5xx10^-3)=2xx10^-5=0.02mH`
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NARAYNA-ELECTROMAGNETIC INDUCTION-EXERCISE-1 (C.W)
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  8. Two inductors each of inductance L are joined in parallel. Their equiv...

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

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  10. A solenoid is 1.5 m long and its inner diameter is 4.0 cm . It has thr...

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  11. A coil of wire of a certain radius has 600 turns and a self-inductance...

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  12. Two coils are at fixed location: When coil 1 has no corrent and the cu...

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  13. If a current of 10 A changes in one second throught a coil, and the in...

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  14. A coil of 100 turns carries a current of 5mA and creates a magnetic fl...

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  15. A solenoid of lenght 30 cm with 10 turns per centimetre and area of cr...

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

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  17. The average self-induced emf in a 25m H solenoid when the current in i...

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

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  19. A coil of 100 turns with a current of 5A produce a magnetic flux of 1 ...

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  20. In an inductance coil the current increases from zero to 6 ampere in 0...

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