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he product of the inductances of two solenoids is 20 mH^2, if their mutual inductance is 3.24 mH, what should be the coupling factor "k" in 3-places decimal?

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Question

The product of the inductances of two solenoids is 20 mH^2, if their mutual inductance is 3.24 mH, what should be the coupling factor "k" in 3-places decimal?

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