The Electromagnetic Wave of a Coil

AI Thread Summary
The electromagnetic wave generated by a coil travels indefinitely but diminishes in strength with distance. Its propagation is influenced by factors such as the current flowing through the coil, the coil's diameter, and the number of turns. Increasing the current in the coil will enhance the strength of the emitted waves. Biot-Savart's law can provide further insights into the behavior of these electromagnetic fields. Understanding these principles is essential for applications involving coils and electromagnetic waves.
SMT88
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Hello everybody, First excuse me for my English.

Could someone please explain how far the electromagnetic wave of a coil travels?
Does it depend on the current flowing in the coil? The coil diameter? The coil's number of turns?
What will happen to the waves if we increase the current of a coil by two times?

Thanks in advance,
SMT
 
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Nobody answers?
 
According to classical theory it spreads without limit but weakens with distance.Try googling Biot and Savarts law.
 
Dadface said:
According to classical theory it spreads without limit but weakens with distance.Try googling Biot and Savarts law.

Thank you very much!
 
Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

So here is the motional EMF formula. Now I understand the standard Faraday paradox that an axis symmetric field source (like a speaker motor ring magnet) has a magnetic field that is frame invariant under rotation around axis of symmetry. The field is static whether you rotate the magnet or not. So far so good. What puzzles me is this , there is a term average magnetic flux or "azimuthal mean" , this term describes the average magnetic field through the area swept by the rotating Faraday...
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