Two coils placed one above the other have a mutual inductance of 0.5 Henry. If the current in one coil changes at the rate of 100 ampere per second. The emf generated in the other coil is
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Correct option is A)
Flux linking the secondary coil due to current in primary =Mi1
induced emf in the secondary coils=−rate of change of flux
=−M△t△i1
=−5×0.023
=−0.75V
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