23. If the average intensity (energy per unit time per unit area) of an electromagnetic wave at some point in space is , what is the peak electric field at that point? ε₀ and μ₀ are the vacuum permittivity and permeability, respectively. (A) (B) (C) (D) (E)
寫作批改
VIP與詳解卡管理
, what is the peak electric field at that point? ε₀ and μ₀ are the vacuum permittivity and permeability, respectively. 
私人筆記( 0 )
