The Electromagnetic Wave of the Radiation Field from a Wire

question 11

Multiple Choice

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 direction of the electric field?

• A)It points in the negative y direction.
• B)It points in the positive y direction.
• C)It points in the negative z direction.
• D)It points in the negative x direction.
• E)It points in the positive x direction.

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