Question

The oscillating magnetic field in a plane electromagnetic wave is given by
By = (8 × 10-6) sin [2 × 10-11 t + 300 π x] T
(i) Calculate the wavelength of the electo-magnetic wave.
(ii) Write down the expression for the oscillating electric field.​

Answer 1

Here is the correct answer to your question

The oscillations of E→ and B→ fields are perpendicular to each other as well as to the direction of propagation of the wave. So we take electric field in z-direction because oscillating magnetic field is in y-di recti on and propagation of the wave is in x-direction.

Hope this helps you ❤️☑️⬆️

Answer 2

The oscillations of E→ and B→ fields are perpendicular to each other as well as to the direction of propagation of the wave. So we take electric field in z-direction because oscillating magnetic field is in y-di recti on and propagation of the wave is in x-direction.