Two coils, A and B, are wound on the same ferromagnetic core. There are 800 turns...
Two coils, A and B, are wound on the same ferromagnetic core. There are 800 turns on A and 2800 turns on B. A current of 4 A through coil A produces a flux of 1500 μWb in the core. If this current is reversed in 30 ms, calculate the average EMFs induced in coils A and B.
Homework Answers
induced emf in coil A, ems_A = change in megntic flux through coil A/time
= 800*2*1500*10^-6/(30*10^-3)
= 80 volts
induced emf in coil B, ems_B = change in megntic flux through coil B/time
= 2800*2*1500*10^-6/(30*10^-3)
= 280 volts
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