Q. The electric and the magnetic field, associated with an $e$.m. wave propagating along the $+ z$-axis, can be represented by
A) $\left\lbrack \overrightarrow{E} = E_{0}\widehat{j},\overrightarrow{B} = B_{0}\widehat{k} \right\rbrack$
B) $\left\lbrack \overrightarrow{E} = E_{0}\widehat{j},\overrightarrow{B} = B_{0}\widehat{j} \right\rbrack$
C) $\left\lbrack \overrightarrow{E} = E_{0}\widehat{k},\overrightarrow{B} = B_{0}\widehat{i} \right\rbrack$
D) $\left\lbrack \overrightarrow{E} = E_{0}\widehat{j},\overrightarrow{B} = B_{0}\widehat{i} \right\rbrack$
Explanation
(b) $\overrightarrow{E} \times \overrightarrow{B}$ points in the direction of wave propagation
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.