Calculating Electric Field for an FM Antenna in an EM Wave

AI Thread Summary
To calculate the electric field required to produce a 1.28 mV voltage across a 1.10m FM antenna, the relevant equation is V = E * d, where V is voltage, E is the electric field, and d is the length of the antenna. The user initially attempted to use energy density and intensity formulas but found them complex and confusing. After realizing the simpler approach with the voltage equation, they acknowledged the ease of this method. The discussion highlights the importance of selecting appropriate equations for electromagnetic calculations. Ultimately, the focus is on finding the correct electric field value for the given parameters.
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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?
 
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How about using the equation V=E*d?
 
yep, that's a lot easier. oops. thanks!
 

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