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Electric Field of an EM wave

  • Thread starter skibum143
  • Start date
  • #1
112
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Homework Statement


A 1.10m long FM antenna is oriented parallel to the electric field of an EM wave. How large must the electric field be to produce a 1.28 mV voltage between the ends of the antenna?


Homework Equations


u = EoErms^2
I = uc
Intensity = Power / area

The Attempt at a Solution


I found u to be 1.45E-17 using E0 and Erms of .00128V
Then I found I to be 4.35E-9
Then I found P to be 1.65E-8

I'm not sure I'm using the right equations to find the electric field, I don't really know what variable represents it?
 

Answers and Replies

  • #2
ideasrule
Homework Helper
2,266
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How about using the equation V=E*d?
 
  • #3
112
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yep, that's a lot easier. oops. thanks!!
 

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