Q. If rotational velocity of a dynamo armature is doubled, then induced e.m.f. will become
A) Half
B) Two times
C) Four times
D) Unchanged
Explanation
(b) $e \propto \omega$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.