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Giancoli 7th Edition textbook cover
Giancoli's Physics: Principles with Applications, 7th Edition
21
Electromagnetic Induction and Faraday's Law
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21-1 to 21-4: Faraday's Law of Induction
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21-5: Generators
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21-6: Back EMF and Torque
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21-7: Transormers
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21-10: Inductance
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21-11: Magnetic Energy Storage
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21-12: LR Circuit
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21-13: AC Circuits and Reactance
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21-14: LRC Circuits
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21-15: Resonance in AC Circuits
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Question by Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014, Reprinted by permission of Pearson Education Inc., New York.
Problem 25
Q

The back emf in a motor is 72 V when operating at 1800 rpm. What would be the back emf at 2300 rpm if the magnetic field is unchanged?

A
92 V92 \textrm{ V}
Giancoli 7th Edition, Chapter 21, Problem 25 solution video poster
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