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The electric field in an electromagnetic wave is in the y-direction and described by  , where  .

Part (a) If the electromagnetic wave is traveling in the x-direction in a vacuum, what is the direction of the magnetic field?

Part (b) Express the amplitude of the magnetic field. Bo, in terms of E, and the speed of light c.

Part (c) Find the intensity of the electromagnetic wave. I in terms of E. c. and the permeability of free space.

 

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24 Sep 2020

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

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Electromagnetic waves transport energy. This problem shows you which parts of the energy are stored in the electric and magnetic fields repsectively and also makes a useful connection between the energy density of a plane electromagnetic wave and the poynting vector.

In this problem we explore the properties of a plane electromagentic wave traveling at the speed of light c along the x axis through vacuum. Its electric and magnetic fields are as follows:

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