Electro Magnetic Induction And Alternating Currents Question 232
Question: The coil of dynamo is rotating in a magnetic field. The developed induced e.m.f. changes and the number of magnetic lines of force also changes. Which of the following condition is correct [MP PET 1993]
Options:
A) Lines of force minimum but induced e.m.f. is not zero
B) Lines of force maximum but induced e.m.f. is zero
C) Lines of force maximum but induced e.m.f. is not zero
D) Lines of force maximum but induced e.m.f. is not necessarily maximum
Show Answer
Answer:
Correct Answer: B
Solution:
$ e\propto \frac{d\varphi }{dt}; $ if f ® maximum then e ® maximum.
BETA
