engineering recuitment GATE ECE 2023-24 Test Series Electromagnetic Theory Electromagnetic Wave Propagation EM Wave Power and Poynting Vector
The electric field intensity of a plane wave traveling in free space is given by the following expression
\({\rm{E}}\left( {{\rm{x}},{\rm{t}}} \right) = {{\rm{a}}_{\rm{y}}}24{\rm{\pi }}\cos \left( {{\rm{\omega t}} - {{\rm{k}}_0}{\rm{x}}} \right){\rm{\;}}\left( {\frac{{\rm{V}}}{{\rm{m}}}} \right)\)
In this field, consider a square area 10 cm x 10 cm on plane x + y = 1. The total time – averaged power (in mW) passing through the square area is_____________Enter numerical value using the virtual keypad. Round off where necessary.