The ratio of the electric field to the magnetic field in the electromagnetic wave is the speed of the light.

Name: The ratio of the electric field to the magnetic field in the electromagnetic wave is the speed of the light.
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Question

Quizplus · Accepted Answer

This statement is known as Maxwell's equation and it is true. The ratio of the electric field (E) to the magnetic field (B) in an electromagnetic wave is defined as the impedance of free space (Z0) which is equal to the speed of light (c) in a vacuum. Therefore, E/B = c/Z0.

The Ratio of the Electric Field to the Magnetic Field