(a) An EM wave is travelling in a medium with a velocity `vecv=vhati`.Draw a sketch showing the propagation of the EM wave, indicating the direction of the oscillating electric and magnetic fields.
(b) How are the magnitudes of the electric and magnetic fields related to the velocity of the EM wave?

Explanation

(a) Given that velocity, `V = v vec i` and electric field, E along X-axis and magnetic field, B along Z -axis.

(b) Speed of EM wave can be given as the ratio of magnitude of electric field `(epsilon_(0))` to the magnitude of magnetic field `(B_(0))`,
`C=(epsilon_(0))/(B_(0))`.