Electro Magnetic Induction And Alternating Currents Question 544
Question: The self-inductance of a coil is 5 henry, a current of 1 amp change to 2 amp within 5 second through the coil. The value of induced e.m.f. will be [MP PET 1994; Similar MP PET/PMT 1998; CBSE PMT 1990]
Options:
A) 10 volt
B) 0.10 volt
C) 1.0 volt
D) 100 volt
Show Answer
Answer:
Correct Answer: C
Solution:
$ e=-L\frac{di}{dt}\Rightarrow e=5\times \frac{1}{5}=1\ volt $
