Electromagnetic Induction Ques 34
34. A wire loop is rotated in a magnetic field. The frequency of change of direction of the induced e.m.f. is
[2013]
(a) twice per revolution
(b) four times per revolution
(c) six times per revolution
(d) once per revolution
Show Answer
Answer:
Correct Answer: 34.(a)
Solution:
- (a) This is the case of periodic EMI
From graph, it is clear that direction is
changing once in $\frac{1}{2}$ cycle.
BETA
