Q. Three identical ring move with the same speed on a horizontal surface in a uniform horizontal magnetic field normal to the planes of the rings. The first $(A)$ slips without rolling, the second (B) rolls without slipping, and the third rolls with slipping
A) The same emf is induced in all the three rings
B) No emf is induced in any of the rings
C) In each ring, all points are at the same potential
D) B developes the maximum induced emf, and $A$ the least.
Explanation
(a) The same emf is induced in all the three rings because emf is only due to linear motion and does not depend on spin.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.