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Two coupled coils have self and mutual inductance of 4 = 2 + 1/ L = 1 + 2x 2x L2 = L21 =

Two coupled coils have self and mutual inductance of 4 = 2 + 1/ L = 1 + 2x 2x L2 = L21 = 1 2x M over a certain range of linear displacement x. The first coil is excited by a constant current of 20 A and the second by a constant current of -10 A. Please calculate a) Mechanical work done if x changes from 0.5 to 1 meter b) Net input electrical energy

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