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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

77 mH

Text Solution

Verified by Experts

The correct Answer is:
B
We have, `L prop N^(2)`
`(L_(B))/(L_(B))=((n_(B))/(n_(A)))^(2)`
Self-inductance, `L_(B)=((500)/(600))^(2)xx108="75 mH"`
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