Unformatted text preview: magnetic field magnitude in T is much smaller than the electric field in V/m. See page 1264 for clarification. 3. A sinusoidal electromagnetic wave is traveling in the negative zdirection. What are the possible wave functions for the electric and magnetic fields if the wave is linearly polarized in the xdirection? See page 1264 4. Fig. 32.10 shows one wavelength of a sinusoidal electromagnetic wave at time t = 0. For which values of x between x = 0 and x = λ is the energy density at a maximum? For which values is it at a minimum? For which values of x is the magnitude of the instantaneous (not average) Poynting vector at a maximum? For which values is it at a minimum? Both the energy density u and the Poynting vector magnitude S are max where the electric and magnetic fields have their max magnitudes. This occurs at x = λ/4 & 3λ/4....
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This note was uploaded on 04/18/2008 for the course PHYS 0030 taught by Professor Cutts during the Spring '07 term at Brown.
 Spring '07
 Cutts
 Physics

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