Electro Magnetic Induction And Alternating Currents Question 568
Question: The current in a coil changes from 4 ampere to zero in 0.1 s. If the average e.m.f. induced is 100 volt, what is the self inductance of the coil [MNR 1998]
Options:
A) $ 2.5\ H $
B) $ 25,H $
C) $ 400\ H $
D) $ 40\ H $
Show Answer
Answer:
Correct Answer: A
Solution:
$ e=L\frac{di}{dt}\Rightarrow 100=L\times \frac{4}{0.1}\Rightarrow L=2.5\ H $
