Question

The ratio of contributions made by the electric field and magnetic field components to the intensity of an electromagnetic wave is : (c = speed of electromagnetic waves)

• A. c : 1
• B. 1 : 1
• C. 1 : c
• D. $1 : c^2$

Answer 1

Answer: (B)

1 : 1

Answer 2

In an electromagnetic wave, half of the intensity is provided by the electric field and half by the magnetic field. Hence, required ratio should be $1 : 1$