Q. The induced emf of a generator when the flux of poles is doubled and speed is doubled
A) Becomes half
B) Remains same
C) Becomes double
D) Becomes 4 times
Explanation
(d) $e_{0} = NAB\omega.$ When $B\ and\ \omega\ are\ doubled,\ e_{0}$ becomes 4 times.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.