A plane electromagnetic wave of frequency 25 MHz travel in free space along the x-direction. At a particular point in space and timeWhat is B at this point ?
The magnitude of B is
To find the direction, we note that E is along y-direction qand the wave propagated along x- axis. Therefore, B should be in a direction perpendicular to both x-direction. Since, , B is along the z- direction.
Thus, B=2.1k T.