Physics: Principles with Applications (7th Edition)

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

Chapter 22 - Electromagnetic Waves - Problems - Page 641: 5

Answer

$2.4\times10^{-13}T$

Work Step by Step

Use equation 22–2. $$c=\frac{E}{B}$$ Here, E and B are the magnitudes of the electric and magnetic fields at the same point in space. Both fields reach their maximum at the same place. $$B=\frac{E}{c}=\frac{0.72\times10^{-4}V/m}{3.00\times10^8m/s}=2.4\times10^{-13}T$$
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