The Electromagnetic Wave of a Coil

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Discussion Overview

The discussion centers on the propagation of electromagnetic waves generated by a coil, exploring factors that may influence the distance these waves travel, such as current, coil diameter, and the number of turns in the coil. The inquiry also considers the effects of increasing the current on the electromagnetic waves produced.

Discussion Character

  • Exploratory, Technical explanation

Main Points Raised

  • SMT asks about the distance electromagnetic waves from a coil can travel and whether this distance depends on factors like current, coil diameter, and number of turns.
  • SMT inquires about the effects of doubling the current on the electromagnetic waves produced by the coil.
  • Some participants suggest that according to classical theory, electromagnetic waves spread without limit but weaken with distance, referencing Biot and Savart's law.

Areas of Agreement / Disagreement

There is no consensus on the specific factors affecting wave propagation or the implications of increasing current, as the discussion remains unresolved with only a few contributions.

Contextual Notes

The discussion lacks detailed exploration of the assumptions behind the claims made, such as the conditions under which classical theory applies or the specific definitions of terms like "distance" and "weakens."

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!
 

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