Question

If $\overrightarrow{E}$and $\overrightarrow{B}$represent electric and magnetic field vectors of the electromagnetic wave , the direction of propagation of electromagnetic wave is along

• A. $\overrightarrow{E}$
• B. $\overrightarrow{B}$
• C. $\overrightarrow{B} \times \overrightarrow{E}$
• D. $\overrightarrow{E} \times \overrightarrow{B}$

Answer 1

Answer: (D)

$\overrightarrow{E} \times \overrightarrow{B}$

Answer 2

: The direction of propagation of electromagnetic wave is perpendicular to both electric field vector$\overrightarrow{E}$and magnetic field vector $\overrightarrow{B}$i.e. in the direction of $\overrightarrow{E} \times \overrightarrow{B}$