Which of the following is the direction of an electromagnetic wave having electric and magnetic field vectors $\mathbf{E}$ and $\mathbf{B}$ ?
A) $\mathbf{B} \times \mathbf{E}$
B) $\mathbf{E} \times \mathbf{B}$
C) $\mathbf{B}$
D) $\mathbf{E}$
E) $\mathbf{E}+\mathbf{B}$

Question

Quizplus · Accepted Answer

The direction of propagation of an electromagnetic wave is given by the cross product of the electric field vector ($\mathbf{E}$) and the magnetic field vector ($\mathbf{B}$), which is $\mathbf{E} \times \mathbf{B}$. This follows from the right-hand rule, where the direction of the thumb points in the direction of propagation when the fingers are aligned with the electric field and curled towards the magnetic field.

Which of the Following Is the Direction of an Electromagnetic E\mathbf{E}E

Which of the Following Is the Direction of an Electromagnetic $\mathbf{E}$