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A Planar Electromagnetic Wave Is Propagating in the +X Direction

question 3

Multiple Choice

A planar electromagnetic wave is propagating in the +x direction. At a certain point P and at a given instant, the electric field of the wave is given by A planar electromagnetic wave is propagating in the +x direction. At a certain point P and at a given instant, the electric field of the wave is given by = (0.082 V/m) . What is the Poynting vector at the point P at that instant? (c = 3.0 x 10<sup>8</sup> m/s, μ<sub>0</sub> = 4π × 10<sup>-7</sup> T ∙ m/A, ε<sub>0</sub> = 8.85 × 10<sup>-12</sup> C<sup>2</sup>/N ∙ m<sup>2</sup>) A) 18 µW/m<sup>2</sup> B) -18 µW/m<sup>2</sup> C) 9.0 µW/m<sup>2</sup> D) -9.0 µW/m<sup>2</sup> E) -18 µW/m<sup>2</sup> = (0.082 V/m) A planar electromagnetic wave is propagating in the +x direction. At a certain point P and at a given instant, the electric field of the wave is given by = (0.082 V/m) . What is the Poynting vector at the point P at that instant? (c = 3.0 x 10<sup>8</sup> m/s, μ<sub>0</sub> = 4π × 10<sup>-7</sup> T ∙ m/A, ε<sub>0</sub> = 8.85 × 10<sup>-12</sup> C<sup>2</sup>/N ∙ m<sup>2</sup>) A) 18 µW/m<sup>2</sup> B) -18 µW/m<sup>2</sup> C) 9.0 µW/m<sup>2</sup> D) -9.0 µW/m<sup>2</sup> E) -18 µW/m<sup>2</sup>
. What is the Poynting vector at the point P at that instant? (c = 3.0 x 108 m/s, μ0 = 4π × 10-7 T ∙ m/A, ε0 = 8.85 × 10-12 C2/N ∙ m2)

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