Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 21 - Electromagnetic Induction and Faraday's Law - Problems - Page 621: 42

Answer

3400 turns

Work Step by Step

Example 21-13 (page 609) derives the expression for the inductance of an air-filled solenoid. $$L=\frac{\mu_oN^2A}{\mathcal{l}}$$ $$N=\sqrt{\frac{L\mathcal{l}}{\mu_oA }}$$ $$N=\sqrt{\frac{(0.13H)(0.300m)}{ (4 \pi \times10^{-7}(T \cdot m)/A) \pi(0.029m)^2}}$$ $$=3400 turns$$
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