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A plane electromagnetic wave in a non magnetic dielectric medium is given by E=Eo(4×10^-7x-50t) with distance in metre and time in seconds. The dielectric constant of the medium is? Ans:5.8

A plane electromagnetic wave in a non magnetic dielectric medium is given by E=Eo(4×10^-7x-50t)  with distance in metre and time in seconds. The dielectric constant of the medium is?          Ans:5.8

Grade:12th pass

1 Answers

harshin nechooli
121 Points
2 years ago
I think you forgot.  sin 
 in general sine wave.  E sin ( k x-wt )   k=2 pi ÷wavelength    and w = 2pi×frequency 
 thus you got .speed of light in that medium 
    since medium is non magnetic . magnetic   

 material that is not magnetic the permeability is μ0, so that:

 

cm=(μ0ε)1/2Cm =

Cm =(mue ×epzel....)^1÷2 . thus your get dielectric constant

 

HAR

mue r   is 1 . and we need to find.  epzelanot r 
  use   the eqn .

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