Two coils of self-inductance 2mH and 8 ...

Two coils of self-inductance `2mH` and `8 mH` are placed so close together that the effective flux in one coil is completely linked with the other. The mutual inductance between these coil is

4 mH

16 mH

10 mH

6 mH

Text Solution

Verified by Experts

The correct Answer is:

Mutual inductance between coils is
`M=Ksqrt(L_(1)L_(2))`
`rArr" "M=1sqrt(2xx10^(-3)xx8xx10^(-3))" "[thereforeK=1]`
`=4xx10^(-3)="4 mH"`

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