Q. Which of the following has/have zero average value in a plane electromagnetic wave
A) Both magnetic and electric fields
B) Electric field only
C) Magnetic field only
D) Magnetic energy
Explanation
(a) Both magnetic and electric fields have zero average value in a plane $e$.m. wave
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.