Question
Question: A square loop of side a is rotating about its diagonal with angular velocity w in a perpendicular ma...
A square loop of side a is rotating about its diagonal with angular velocity w in a perpendicular magnetic fieldB→. It has 10 turns. The emf induced is–
A
B a2sin wt
B
B a2coswt
C
52 Ba2
D
10 Ba2wsinwt
Answer
10 Ba2wsinwt
Explanation
Solution
f = BA cos q = BA cos wt
\ e = −Ndtdφ= NBA w sin wt = 10 BAw sin wt