College Physics (7th Edition)

Published by Pearson
ISBN 10: 0-32160-183-1
ISBN 13: 978-0-32160-183-4

Chapter 20 - Electromagnetic Induction and Waves - Learning Path Questions and Exercises - Conceptual Questions - Page 724: 11

Answer

Since $I=\frac{E-E_{back}}{R}$, if the armature is jammed or turns very slowly, there is no back emf, and hence there is large current.

Work Step by Step

Since $I=\frac{E-E_{back}}{R}$, if the armature is jammed or turns very slowly, there is no back emf, and hence there is large current.
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