Electro Magnetic Induction And Alternating Currents Question 540
Question: Two circuits have coefficient of mutual induction of 0.09 henry. Average e.m.f. induced in the secondary by a change of current from 0 to 20 ampere in 0.006 second in the primary will be [MP PET 1992]
Options:
A) 120 V
B) 80 V
C) 200 V
D) 300 V
Show Answer
Answer:
Correct Answer: D
Solution:
$ e=M\frac{di}{dt}=0.09\times \frac{20}{0.006}=300\ V $
