Question 300: Electromagnetic Induction

Question

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

Accepted Answer

Coefficient of coupling,
$$\mathrm{K}=\frac{\mathrm{M}}{\sqrt{\mathrm{L}_1 \mathrm{~L}_2}}=\frac{3}{\sqrt{36}}=0.5$$

Answer

0.3

Answer

0.4

Answer

0.5

Answer

0.6

Electromagnetic Induction

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

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