When the coil of a motor is rotating at maximum speed, the current in the windings is 5.8 A. When the motor is first turned on, the current in the windings is 11.47 A. If the motor is operated at 120 V, calculate the resistance of the windings. The resistance, Rcoil = 10.46 Units Ω Calculate the back emf in the coil at maximum speed. The back emf, Eback = 60.33 What is the current in the windings if the speed of the motors is half of its maximum value? The current, I = 2.88 Units V x Units A

When the coil of a motor is rotating at maximum speed, the current in the windings is 5.8 A. When the motor is first turned on, the current in the windings is 11.47 A. If the motor is operated at 120 V, calculate the resistance of the windings. The resistance, Rcoil = 10.46 Units Ω Calculate the back emf in the coil at maximum speed. The back emf, Eback = 60.33 What is the current in the windings if the speed of the motors is half of its maximum value? The current, I = 2.88 Units V x Units A

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

When the coil of a motor is rotating at maximum speed, the current in the windings is 5.8 A. When the
motor is first turned on, the current in the windings is 11.47 A. If the motor is operated at 120 V, calculate
the resistance of the windings.
The resistance, Rcoil 10.46
Calculate the back emf in the coil at maximum speed.
The back emf, Eback
=
=
60.33
2.88
✔Units Q
What is the current in the windings if the speed of the motors is half of its maximum value?
The current, I
✓ Units V
X Units A

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