A motor has coils with a resistance of27and operates from a voltage of242V. When the motor is operating at its maximum speed, the back emf is146V.
(a) Find the current in the coils when the motor is first turned on.
A
(b) Find the current in the coils when the motor has reached maximum speed.
A
(c) If the current in the motor were7.0A at some instant, what is the back emf at that time?
V