The Electromagnetic Wave of the Radiation Field from a Wire

The electromagnetic wave of the radiation field from a wire antenna travels toward the plane of your paper (which is in the -z direction) . At time t = 0 s, the wave strikes your paper at normal incidence. The magnetic field vector at point O in the figure points in the -y direction and has a magnitude of 4.0 × 10^-8 T. The frequency of the wave is 1.0 × 10¹⁶ Hz.
-What is the intensity of the electromagnetic wave at time t = 0 s?

A) 0.24 W/m²
B) 0.38 W/m²
C) 0.48 W/m²
D) 0.76 W/m²
E) 24 W/m²

Correct Answer:

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