Q. The electric field for a plane electromagnetic wave travelling in the positive $\mathcal{z}$-direction is represented by which one of the following?
A) ${\widehat{\mathbf{k}}}_{1}E_{0}e^{i}(k\mathcal{z -}\omega t + \phi)$
B) ${\widehat{\mathbf{i}}}_{1}E_{0}e^{i}(kx - \omega t + \phi)$
C) ${\widehat{\mathbf{i}}}_{1}E_{0}e^{i}(k\mathcal{z +}\omega t + \phi)$
D) ${\widehat{\mathbf{k}}}_{1}E_{0}e^{i}(k\mathcal{z +}\omega t + \phi)$
Explanation
The correct answer is Option B: ${\widehat{\mathbf{i}}}_{1}E_{0}e^{i}(kx - \omega t + \phi)$.
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.