Questions
The mutual inductance between a primary and secondary circuits is 0.5 H. The resistances of the primary and the secondary circuits are 20 ohms and 5 ohms, respectively. To generate a current of 0.4 A in the secondary, current in the primary must be changed at the rate of
detailed solution
Correct option is A
e2=Mdi1dt⇒i2R2=Mdi1dt⇒0.4×5=0.5×di1dt⇒di1dt=4 A/sTalk to our academic expert!
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Two circular coils can be arranged in any of the three situations shown in fig.. Their mutual
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