mutual inductance

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Two identical 750-turn coils A and B lie in parallel plane. A current changing at the rate of 1500 A/s in A induces an emf of 11.25 V in B. (a)Calculate the mutual inductance of the arrangement.(b)If the inductance of each coil is 15mH, calculate the flux produced in coil A per ampere and, the percentage of this flux which links the turns of B.

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