Physics for IGCSE & O level - Rays And Waves (Section 4 - No. 30)
Which of these best describes the direction of the electric and magnetic fields in an electromagnetic wave?
Parallel to each other and to the direction of propagation.
Perpendicular to each other and perpendicular to the direction of propagation.
Parallel to each other and perpendicular to the direction of propagation.
Perpendicular to each other and parallel to the direction of propagation.
Explication
The electric and magnetic fields are perpendicular to each other and the direction of propagation.