Question

A sinusoidal electromagnetic wave is propagating in vacuum. At a given point and at a particular time the electric field is in the x direction and the magnetic field is in the -y direction. What is the direction of propagation of the wave

Answer 1

Answer:

Explanation:

A wave is a disturbance or oscillation that passes through spatial time and is followed by a transfer of energy. For transverse waves, the propagation direction is perpendicular to the oscillation direction. A wave moves energy rather than moving mass within the direction of propagation.

From the given information;

The direction = $E^{\to}\times B^{\to}$

This implies that:  $\hat i \times (-j)$

$\implies - \hat k$

In the $-z$ direction