A motor having a resistance of 12.0 Q is connected to a 120 V line. Find the current (a) upon starting and (b) when the motor is rotating at its maximum speed rate resulting in a back electromotive force of 24 V.

A motor having a resistance of 12.0 Q is connected to a 120 V line. Find the current (a) upon starting and (b) when the motor is rotating at its maximum speed rate resulting in a back electromotive force of 24 V.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter23: Electromagnetic Induction, Ac Circuits, And Electrical Technologies

Section: Chapter Questions

Problem 42PE: The motor in a toy car operates on 6.00 V. developing a 4.50 V back emf at normal speed. If it draws...

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Question

2. A motor having a resistance of 12.0 N is connected to a 120 V line. Find the current (a) upon
starting and (b) when the motor is rotating at its maximum speed rate resulting in a back
electromotive force of 24 V.

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