Question

In an electromagnetic wave, the direction of the magnetic induction $\overrightarrow{B}$ is

• A. parallel to the electric field $\overrightarrow{E}$
• B. perpendicular to the electric field $\overrightarrow{E}$
• C. antiparallel to the pointing vector $\overrightarrow{S}$
• D. random

Answer 1

The correct option is B perpendicular to the electric field $\overrightarrow{E}$

$Answer:-$ B

The electric field is always perpendicular to the magnetic field, and both fields are directed at right-angles to the direction of propagation of the wave. In fact, the wave propagates in the direction $\overrightarrow{E}\times \overrightarrow{B}$. Electromagnetic waves are clearly a type oftransverse wave.