Does EM Wave induce emf in coil?

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Discussion Overview

The discussion centers around whether electromagnetic (EM) waves induce electromotive force (emf) or current in coils or inductors, referencing Faraday's law of electromagnetic induction. The scope includes theoretical implications and practical applications related to various types of EM waves.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant questions if EM waves induce emf in coils or inductors due to the changing magnetic field, referencing Faraday's law.
  • Another participant asserts that radio waves can induce voltages in aerial wires, suggesting practical examples of this phenomenon.
  • A third participant provides an example of a UHF TV antenna, implying that such devices utilize the induction of emf from EM waves.
  • A later reply posits that if one type of EM wave induces current, then all EM waves in the spectrum, including visible light, should also induce current, seeking clarification on this point.

Areas of Agreement / Disagreement

Participants express varying views on the extent to which different types of EM waves induce emf, with some suggesting that all EM waves should have this effect while others provide specific examples without reaching a consensus.

Contextual Notes

The discussion does not clarify the conditions under which different EM waves may or may not induce emf, nor does it address potential limitations in the assumptions made about the effects of various frequencies of EM waves.

Who May Find This Useful

Individuals interested in electromagnetic theory, applications in communication technology, and the principles of induction in physics may find this discussion relevant.

Deadevil
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Hi!
Does electromagnetic waves induced emf or current in the coil or inductor due to faraday law as the magnetic field is continously changing in em wave?
 
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Radio wave induce voltages in aerial wires etc.
 
It means each & every em wave in the em spectrum will produce faradays law effect? Which in turn means visible light in em spectrum also induce current as other EM Wave induces? Am I Right?
 

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