For two solenoids, what is the mutual inductance if the medium has relative permeability µr?

Question

Accepted Answer

M = µr µ₀ n₁ n₂ π r₁² l

Answer

M = µ₀ n₁ n₂ π r₁² l

Answer

M = µ₀ n₁ n₂ π r₂² l

Answer

M = µr µ₀ n₁ n₂ π r₂² l

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