Q. Armature current in dc motor will be maximum when
A) Motor has acquired maximum speed
B) Motor has acquired intermediate speed
C) Motor has just started moving
D) Motor is switched off
Explanation
(c) Motor e.m.f. equation $E_{b} = V - I_{a}R_{a}$
At starting $E_{b} = 0$, so $I_{a}$ will be maximum
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.