Two coils having self-inductance L₁ = 75 mH and L₂ = 48 mH are coupled with each other. If the mutual inductance of the coils is 37.2 mH, then coefficient of coupling will be

Step-by-step solution

The relation between mutual inductance M , self-inductances L₁ and L₂ , and the coefficient of coupling k is given by M = k L₁ L₂ Substituting the given values: 37.2 = k 75 48 37.2 = k 3600 37.2 = k 60 k = 37.2 60 = 0.62 Answer: 0.62