What are the directions of electric and magnetic field vectors relative to each other and relative to the direction of propagation of electromagnetic waves ?

Explanation

To determine the directions of electric and magnetic field vectors relative to each other and relative to the direction of propagation of electromagnetic waves, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Direction of Propagation**:
- Let's assume the electromagnetic wave is propagating along the x-axis. This means the wave velocity vector (v) is directed along the x-axis.

2. **Define the Electric Field Vector**:
...