The ratio of average electric energy density and total average energy density of electromagnetic wave is :

Step-by-step solution

We have U _ E U _ T = U _ E U _ E + U _ B = U _ E 2 U _ E = 1 2 [ U _ E = U _ B = 1 2 ₀ E ₀^2= B ₀^2 2 ₀ ]