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Poynting vector

  1. Mar 11, 2009 #1
    If the electromagnetic wave is descirbed as:
    E=Eocosw((eu)^1/2z-t)i + Eosinw((eu)^1/2z-t)j
    Find the corresponding magnetic field and the poynting vector.
     
  2. jcsd
  3. Mar 11, 2009 #2

    tiny-tim

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    Hi jc09! :wink:

    Show us what you've tried, and where you're stuck, and then we'll know how to help! :smile:
     
  4. Mar 11, 2009 #3
    Well I know VxE= -dB/dt so if i get the curl of E given I will get minus the value of the differentiate form. So will I then integrate back up or is this right?
     
  5. Mar 11, 2009 #4

    tiny-tim

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    have a del: ∇ :wink:

    s'right!

    go for it! :biggrin:
     
  6. Mar 11, 2009 #5
    So I got B=(eu)^1/2Eocosw((eu)^1/2z-t) is that right.
    To get the poynting vector I need to use S=E x H. What is H?
     
  7. Mar 11, 2009 #6

    tiny-tim

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    Last edited by a moderator: Apr 24, 2017
  8. Mar 11, 2009 #7
    ok I got it now thanks
     
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