When two coupled coils of equal self-inductance are connected in series in one way the net inductance is 12 mH, and when they are connected in the other way, the net inductance is 4 mH. The maxiumum value of net inductance when they are connected in parallel in a suitable way is _________ mH

When two coupled coils of equal self-inductance are connected in serie

1.	When two coupled coils of equal self-inductance are connected in series in one way the net inductance is 12 mH, and when they are connected in the other way, the net inductance is 4 mH. The maxiumum value of net inductance when they are connected in parallel in a suitable way is _________ mH
A.	3 mH
B.	5 mH
C.	9 mH
D.	10 mH
Answer» B. 5 mH

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When two coupled coils of equal self-inductance are connected in series in one way the net inductance is 12 mH, and when they are connected in the other way, the net inductance is 4 mH. The maxiumum value of net inductance when they are connected in parallel in a suitable way is _________ mH

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