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
21-5: Generators
21-6: Back EMF and Torque
21-7: Transormers
21-10: Inductance
21-11: Magnetic Energy Storage
21-12: LR Circuit
21-13: AC Circuits and Reactance
21-14: LRC Circuits
21-15: Resonance in AC Circuits

Question by Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014, Reprinted by permission of Pearson Education Inc., New York.
Problem 24
Q

A motor has an armature resistance of 3.65  Ω3.65 \; \Omega. If it draws 8.20 A when running at full speed and connected to a 120-V line, how large is the back emf?

A
9.0×101 V9.0 \times 10^1 \textrm{ V}
Giancoli 7th Edition, Chapter 21, Problem 24 solution video poster
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