The mutual inductance (M) of the two coils is 3 H. The self inductances of the coils are 4 H and 9 H respectively. The coefficient of coupling between the coils is (a) 0.3 (b) 0.4 (c) 0.5 (d) 0.6

Answer: (c). k = (M)/(√(L₁L₂)) = (3)/(√(4 × 9)) k = 3/6 = 0.5 So the answer is (c) 0.5.

The mutual inductance (M) of the two coils is 3 H. The self… | MHT CET 2023 (9 May, Shift 2)

Q38MHT CET 2023 · 9 MAY · SHIFT 2Easy

Mutual Inductance

The mutual inductance (M) of the two coils is $3\text{ H}$ . The self inductances of the coils are $4\text{ H}$ and $9\text{ H}$ respectively. The coefficient of coupling between the coils is

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Answer: (c)

$k = \dfrac{M}{\sqrt{L_1L_2}} = \dfrac{3}{\sqrt{4 \times 9}}$
$k = \dfrac{3}{6} = 0.5$
So the answer is (c) 0.5.

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Mutual Inductance question from MHT CET 2023 (9 May, Shift 2)

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