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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.
(c) If the current in the motor were7.0A at some instant, what is the back emf at that time?
V
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