Q. If $\overrightarrow{\mathbf{E}}$ is an electric field and $\overrightarrow{\mathbf{B}}$ is the magnetic induction then the energy flow per unit area per unit time in an electromagnetic field is given by
A) $\overrightarrow{\mathbf{E}}\mathbf{\times}\overrightarrow{\mathbf{B}}$
B) $\overrightarrow{\mathbf{E}}\mathbf{\bullet}\overrightarrow{\mathbf{B}}$
C) $E^{2} + B^{2}$
D) $E/B$
Explanation
The correct answer is Option A: $\overrightarrow{\mathbf{E}}\mathbf{\times}\overrightarrow{\mathbf{B}}$.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.