Question

The electric and magnetic field of an electromagnetic wave are

• A. in opposite phase and perpendicular to each other
• B. in opposite phase and parallel to each other
• C. in phase and perpendicular to each other
• D. in phase and parallel to each other.

Answer 1

Answer: (C)

in phase and perpendicular to each other

Answer 2

In $EM$ waves $\vec{E}$ and $\bar{B}$ are in same phase and perpendicular to each other.