A dc motor has coils with a resistance of 13 and is, Ask an Expert

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A dc motor has coils with a resistance of 13 ? and is connected to an emf of 120.0 V. When the motor operates at full speed, the back emf is 72 V.

(a) What is the current in the motor when it first starts up?

(b) What is the current when the motor is at full speed?

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