In an electromagnetic wave, the magnitudes of the electric field (E) and the magnetic field (B) are related to each other. This relationship is governed by a fundamental constant known as the speed of light (c), which has a value of approximately 299,792,458 meters per second in a vacuum.
The relationship between the magnitudes of E and B can be described by the following equation:
E = c * B
This equation states that the magnitude of the electric field (E) is equal to the speed of light (c) multiplied by the magnitude of the magnetic field (B). This relationship holds true for electromagnetic waves in vacuum or in a medium where the wave propagates with the speed of light.
It's important to note that the actual values of E and B in an electromagnetic wave can vary depending on factors such as the intensity of the wave and the distance from the source. However, the ratio of E to B remains constant and is determined by the speed of light.