The standards equation for a wave, which propagates along the z-direction is given by:
A(ωt - kz)
v = ω/k
Comparing with the given equation:
vz = ω/-k = (-ω/k)[E0cos(ωt - (-kz)]
The electric field of a plane EM wave is given by Ex = E0cos(kz+ωt), Ey = Ez =0.
A. Determine the direction of propagation. (The answer is -z-direction but I wonder why)
B. Determine the peak value of B in terms of E0 and constants
C. Determine the direction of B at location z = 0 and t = 0 (the answer is -y-direction but I wonder why)
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Electromagnetic Waves as Sinusoidal Waves concept. You can view video lessons to learn Electromagnetic Waves as Sinusoidal Waves. Or if you need more Electromagnetic Waves as Sinusoidal Waves practice, you can also practice Electromagnetic Waves as Sinusoidal Waves practice problems.