Electro Magnetic Induction And Alternating Currents Question 533
Question: The mutual inductance between two coils is 1.25 henry. If the current in the primary changes at the rate of 80 ampere/second, then the induced e.m.f. in the secondary is [MP PET 1990]
Options:
A) 12.5 V
B) 64.0 V
C) 0.016 V
D) 100.0 V
Show Answer
Answer:
Correct Answer: D
Solution:
$ e=M\frac{di}{dt}=1.25\times 80=100\ V $
BETA
