What would cause a magnetic field in this case?

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Discussion Overview

The discussion revolves around the causes of magnetic fields, specifically whether they arise from electric currents or electric fields, particularly in materials with low susceptibility and high permeability. The scope includes theoretical considerations of electromagnetism.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant questions whether a magnetic field in a material is caused by an electric current or an electric field, given specific material properties.
  • Another participant states that both electric currents and time-dependent electric fields can induce magnetic fields, while static electric fields do not directly lead to magnetic fields unless they cause currents.
  • A further contribution raises the idea that an object generating a variable electric field would itself experience a magnetic field, questioning its effect on the original material discussed.
  • Another participant requests clarification on which object is being referred to in the context of the variable electric field.

Areas of Agreement / Disagreement

Participants express differing views on the relationship between electric fields, currents, and magnetic fields, indicating that the discussion remains unresolved with multiple competing perspectives.

Contextual Notes

There are assumptions regarding the definitions of electric fields and magnetic fields, as well as the specific conditions under which they interact with materials. The discussion does not resolve these assumptions.

Hami Hashmi
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Hi,

I've been wondering what causes a magnetic field, current or an electric field. If you had a material with extremely low susceptibility and extremely high permeability then what would cause a magnetic field in this material, a current or an electric field (as long as whatever is causing the electric field is not in contact with the material).
 
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Both an electric current and a time-dependent electric field induce a magnetic field. A static electric field does not lead to a magnetic field - only indirectly if it leads to currents somewhere.
 
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But the object that is making the variable electric field will experience a magnetic field made by itself, right? Will it effect the 1st material? (the one mentioned in my original post).
 
Hami Hashmi said:
But the object that is making the variable electric field

what object ?? ... be specific
 

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