Question

An electromagnetic wave travels along positive x-axis. Which of the following pairs of space and time varying fields would generate such a wave?

Answer 1

Ex and By would generate a plane electromagnetic wave traveling in the z-direction. E, B, and k form a right-handed system where k is along the z-axis. (As, i x j = k) ∴ E is along the x-axis and B is along the y-axis