Question

For an electromagnetic wave in free space having an electric field of amplitude E and a magnetic field of amplitude B, the ratio of B/E is equal to

1. c

2. c²

3. 1/c

4.1/c²

5. √c

Answer 1

The ratio of the magnetic field to the electric field in an electromagnetic wave in free space is c.

Step-by-step explanation:

The ratio of the magnetic field (B) to the electric field (E) in an electromagnetic wave in free space is given by B/E = c, where c is the speed of light.

Therefore, the correct answer is 1. c.