Electro Magnetic Induction And Alternating Currents Question 537
Question: If a current of 3.0 amperes flowing in the primary coil is reduced to zero in 0.001 second, then the induced e.m.f. in the secondary coil is 15000 volts. The mutual inductance between the two coils is [MP PMT 1989, 91]
Options:
A) 0.5 henry
B) 5 henry
C) 1.5 henry
D) 10 henry
Show Answer
Answer:
Correct Answer: B
Solution:
$ e=M\frac{di}{dt}\Rightarrow M=\frac{15000}{3}\times 0.001=5\ H $
