A motor has calls with a resistance of 25 ohm andoperates from a voltage of 238 V. When the motoris operating at its maximum speed, the back emf is149 V. Find'the current in the calls when the motoris first turned on. A Find the current in the callswhen the motor has reached maximum speed.

An electric current is a stream of charged particles, such as electrons or ions, moving through an…

has calls with a resistance of 25 ohm operates from a voltage of 238 V. When the mc s operating at its maximum speed, the back em 49 V. Find the current in the calls when the mot s first turned on. A Find the current in the calls hen the motor has reached maximum speed.

has calls with a resistance of 25 ohm operates from a voltage of 238 V. When the mc s operating at its maximum speed, the back em 49 V. Find the current in the calls when the mot s first turned on. A Find the current in the calls hen the motor has reached maximum speed.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter13: Electromagnetic Induction

Section: Chapter Questions

Problem 61P: A 120-V, series-wound motor has a field resistance of 80 and an armature resistance of 10. When it...

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Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.

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Question

A motor has calls with a resistance of 25 ohm and
operates from a voltage of 238 V. When the motor
is operating at its maximum speed, the back emf is
149 V. Find'the current in the calls when the motor
is first turned on. A Find the current in the calls
when the motor has reached maximum speed.

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