7. The electric field of a plane EM wave is given by Ex = E0 cos (kz + ωt), Ey = Ez =0. Determine (a) the magnitude and direction of B, and (b) the direction of propagation.
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In this case, E0 = E0, so B = E0/c. Show more…
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(II) The electric field of a plane EM wave is given by $E_{x}=$ $E_{0} \cos (k z+\omega t), \quad E_{y}=E_{z}=0,$ Determine (a) the direction of propagation and $(b)$ the magnitude and direction of $\overrightarrow{\mathbf{B}}$.
A plane electromagnetic wave is propagating through space. Its electric field vector is given by: E = E0 cos(kx - ωt)y. a) What direction is the wave traveling? b) What is the direction of the electric field? c) What is its magnetic field vector? A. B = B0 cos(kx - ωt)x B. B = B0 cos(ky - ωt)y C. B = B0 cos(kz - ωt)z D. B = B0 cos(ky - ωt)z E. B = B0 cos(kx - ωt)z
Frank D.
The electric field of a certain plane electromagnetic wave is given by $E_{x}=0 ; E_{y}=0 ; E_{z}=(2.0 \mathrm{~V} / \mathrm{m}) \cos [(\pi \times$ $\left.\left.10^{15} \mathrm{~s}^{-1}\right)(t-x / c)\right]$, with $c=3.0 \times 10^{8} \mathrm{~m} / \mathrm{s}$. The wave is propagating in the positive $x$ direction. Write expressions for the components of the magnetic field of the wave.
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