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What happens to the coupling coefficient when the flux linkage of coil 1 and coil 2 increases?

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in Basic Electrical Engineering by (88.7k points)
What happens to the coupling coefficient when the flux linkage of coil 1 and coil 2 increases?

(a) Increases

(b) Decreases

(c) Remains the same

(d) Becomes zero

I had been asked this question in exam.

My question is based upon Coupling Coefficient topic in division Inductance in a DC Circuit of Basic Electrical Engineering

1 Answer

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Best answer
Correct choice is (a) Increases

Explanation: When the flux linkage of coil 1 and coil 2 increases, its mutual inductance increases. The coupling coefficient is directly proportional to the mutual inductance hence as mutual inductance increases, the coupling coefficient increases.

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