Electro Magnetic Induction And Alternating Currents Question 590
Question: Two circuits have mutual inductance of 0.1 H. What average e.m.f. is induced in one circuit when the current in the other circuit changes from 0 to 20 A in 0.02 s [Kerala PET 2002]
Options:
A) 240 V
B) 230 V
C) 100 V
D) 300 V
Show Answer
Answer:
Correct Answer: C
Solution:
$ e=M\frac{di}{dt}\Rightarrow e=0.1\times \frac{(20-0)}{0.02}=100V $
