Current induction into an antenna?

AI Thread Summary
The discussion focuses on understanding the current induced in a wire by radio waves and the relationship between power and induced voltage at the antenna terminals. It highlights that the receive voltage can be calculated based on the electric field strength of the incoming electromagnetic signal, which is measured in volts per meter. The conversation also mentions that this electric field strength can be converted into power measured in watts. Additionally, it raises the question of whether the inquiry pertains to basic high school physics or more advanced college-level concepts involving Maxwell's equations. The thread emphasizes the need for clarity on the specific requirements of the research.
Jay_Gridley
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I am researching radios in physics, and i need to find out what current is induced into a wire depending on its power, i don't know the units for the power of the radio wave.

can someone help me out? thanks.
 
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I'm a little fuzzy on what you're asking. You can calculate the receive voltage on the antenna terminals based on the field strength of the incoming electromagnetic signal, for various antenna configurations and so on. Like for an ideal dipole or monopole antenna at resonance, you can express the output terminal voltage as a function of the Electric field strength of the incoming EM (in units of Volts/meter). You can convert the electric field strength to a power if you want (in watts), to go from incoming power to the output terminal voltage of the antenna. Is this what you are trying to do, or are you looking at more basic stuff? Is this for high school physics (mostly just forumulas) or for college physics (so you have a background in Maxwell's equations, etc.)?
 

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