Electro Magnetic Induction And Alternating Currents Question 420
Question: A rectangular coil ABCD is rotated anticlockwise with a uniform angular velocity about the axis shown in diagram below. The axis of rotation of the coil as well as the magnetic field B are horizontal. The induced e.m.f. in the coil would be maximum when [Haryana CEE 1996; MP PMT 1992, 94, 99]
Options:
A) The plane of the coil is horizontal
B) The plane of the coil makes an angle of 45° with the magnetic field
C) The plane of the coil is at right angles to the magnetic field
D) The plane of the coil makes an angle of 30° with the magnetic field
Show Answer
Answer:
Correct Answer: A
Solution:
Emf = $ e=e_{0}\sin \theta ; $ e will be maximum when q is 90o i.e. plane of the coil will be horizontal.
