Question

An electromagnetic wave from a wire antenna travels (from the reader) toward the plane of the paper. At time t = 0.0 s it strikes the paper at normal incidence. At point O and t = 0.0 s, the magnetic field vector has its maximum value, 3.79×10^-8 T, pointing in the negative y-direction. The frequency of this wave is 1.22×10⁶ Hz

1. What is the x-component of the associated electric field E at time t = 0.0 s? (Use the right-hand rule to determine the direction of E, and hence the sign of the x-component.

2. What is the magnitude of the Poynting vector of the wave at time t = 0.0 s?

3. What is the y component of the magnetic field at point O at time 4.10×10^-7 s?

Answer 1