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A coil of wire of a certain radius has 6...

A coil of wire of a certain radius has `600` turns and a self-inductance of `108 mH`. The self-inductance of a `2^(nd)` similar coil of `500` turns will be

A

74 mH

B

75 mH

C

76 mH

D

77mH

Text Solution

Verified by Experts

The correct Answer is:
B
Inductance, `L prop N^2`
Inductance of similar coil of different turns is given by
`L.=L(N.^2)/N^2=108xx(500/6000)^2=75mH`
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NARAYNA-ELECTROMAGNETIC INDUCTION-EXERCISE-1 (C.W)
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  11. A coil of wire of a certain radius has 600 turns and a self-inductance...

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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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