Electro Magnetic Induction And Alternating Currents Question 374
Question: The magnetic field in a coil of 100 turns and 40 square cm area is increased from 1 Tesla to 6 Tesla in 2 second. The magnetic field is perpendicular to the coil. The e.m.f. generated in it is [MP PMT 1994]
Options:
A) $ 10^{4},V $
B) 1.2 V
C) 1.0 V
D) $ {{10}^{-2}},V $
Show Answer
Answer:
Correct Answer: C
Solution:
$ e=-N( \frac{\Delta B}{\Delta t} ).A\cos \theta $ $ =-100\times \frac{(6-1)}{2}\times (40\times {{10}^{-4}})\cos 0 $
$ \Rightarrow ,|e|,=1\ V $
