Two coils give equivalent inductances 18 H in series aiding and 10 H in series opposing. If L₁=9 H, determine L₂ and M.
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Two coils give equivalent inductances 18 H in series aiding and 10 H in series opposing. If L₁=9 H, determine L₂ and M.

G1 Physics · Accepted Answer

Adding the two measurements gives 2(L₁+L₂)=28, so L₁+L₂=14 and L₂=5 H. Their difference gives 4M=8, so M=2 H.