University Physics with Modern Physics (14th Edition)

Published by Pearson
ISBN 10: 0321973615
ISBN 13: 978-0-32197-361-0

Chapter 30 - Inductance - Problems - Exercises - Page 1013: 30.10

Answer

238.

Work Step by Step

Equate 2 expressions for L, $\frac{\epsilon}{|di/dt|}$ and $\frac{N\Phi_B}{i}$. Solve for N, the number of turns. $$N =\frac{\epsilon i}{\Phi_B |di/dt|} =\frac{(0.0126V)(1.40A)}{(0.00285Wb)(0.0260A/s)}=238$$
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