Electro Magnetic Induction And Alternating Currents Question 551
Question: The inductance of a coil is $ 60,\mu H $ . A current in this coil increases from 1.0 A to 1.5 A in 0.1 second. The magnitude of the induced e.m.f. is [MP PMT 1995]
Options:
A) $ 60\times {{10}^{-6}},V $
B) $ 300\times {{10}^{-4}},V $
C) $ 30\times {{10}^{-4}},V $
D) $ 3\times {{10}^{-4}},V $
Show Answer
Answer:
Correct Answer: D
Solution:
$ e=L\frac{di}{dt}=60\times {{10}^{-6}}.\frac{(1.5-1.0)}{0.1}=3\times {{10}^{-4}}volt $
