engineering recuitment GATE ECE 2023-24 Test Series Electromagnetic Theory Electromagnetic Wave Propagation EM Wave Power and Poynting Vector
An electromagnetic wave is propagating in free space in -ax direction with a frequency ω and phase angle zero. The EM wave is polarized in +az direction. If the amplitude of the electric field of the wave is E0, then:
1
The electric field of the wave will be E = -E0 cos (ωt – βz) az
2
The magnetic field of the wave will be \(H = \frac{{{E_0}}}{{{\eta _0}}}\cos \left( {\omega t + \frac{\omega }{c}x} \right){a_y}\)
3
The electric field of the wave will be \(E = {E_0}\cos \left( {\omega t + \frac{\omega }{c}x} \right){a_z}\)
4
The magnetic field of the wave will be \(\frac{{ - {E_0}}}{{\eta_0}}\cos \left( {\omega t + \frac{\omega }{c}x} \right){a_y}\)