Show that the effective inductance of the two coils, Electrical Engineering

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Q. The self-inductances of two coupled coils are L₁₁ and L₂₂, and the mutual inductance between them is M. Show that the effective inductance of the two coils in series is given by

Lseries = L₁₁ + L₂₂ ± 2M

and the effective inductance of the two coils in parallel is given by

1342_Show that the effective inductance of the two coils.png

Specify the conditions corresponding to different signs of the term 2M.

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