Q. A cylindrical bar magnet is kept along the axis of a circular coil. The magnet is rotated about its axis such that north pole faces the coil. The induced current in the coil
A) Is zero
B) Is clock-wise from magnet side
C) May be clock-wise or anti clock wise
D) Is anti-clock-wise from magnet side
Explanation
(a) On rotating the magnet, no change in flux is linked with the coil. Therefore, induced emf/ current is zero.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.