Metal induction coil I xx 2₁ = = N₂₁ Coil 2 JEBL St = -N₂ = - M₂1 N₂ dt JII It Ми = N₂ B₂ I₁ ↓ The mental of coll 2 By the M₁₂ = inductance M₂1 writ coil | Sume NI IBL I₂ {₁ = -M₁₂ token d I₂ dt M₁₂ = M₂1 = M = prove
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