anonymous
  • anonymous
E cross H= Power Curl(E cross H)=H (curl E)- E(Curl H) H ( -dB/dt ) -E( J+ dD/dt) for some reason they say J=0 , I don't get why?
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
@Preetha
anonymous
  • anonymous
J depends on what material is used. In free space there are no electric charges, and hence J equals to zero.
Vincent-Lyon.Fr
  • Vincent-Lyon.Fr
(same answer as Anonymous1921) If you use this equation with reference to an electromagnetic wave travelling in a vacuum, there is not current there, so J = 0

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