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Coefficient of coupling between two coil...

Coefficient of coupling between two coils of self-inductances `L_(1)` and `L_(2)` is unity. It means

A

50% of `L_(1)` is linked with `L_(2)`

B

`sqrt(L_(1))` time of `L_(1)` is linked with `L_(2)`

C

100% of `L_(1)` is linked with `L_(2)`

D

none of the above

Text Solution

Verified by Experts

The correct Answer is:
B
100% of `L_(1)` is linked with `L_(2)`
Explanation: Coupling coefficient is given by: `k=(M)/(sqrt(L_(1)L_(2)))`
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