When Do Charged Particles Exhibit Electric or Magnetic Fields?

  • Context: Undergrad 
  • Thread starter Thread starter EIRE2003
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Discussion Overview

The discussion centers around the conditions under which charged particles exhibit electric and magnetic fields, exploring the relationship between these fields and their structures. Participants consider whether these fields can coexist and how they interact, particularly in relation to moving and stationary charges.

Discussion Character

  • Conceptual clarification, Technical explanation, Debate/contested

Main Points Raised

  • One participant questions whether charged particles have electric and magnetic fields simultaneously and if the fields overlap in structure.
  • Another participant states that static electric charges produce static electric fields without generating magnetic fields, while moving charges create magnetic fields.
  • A different participant reinforces that only moving charges generate magnetic fields, which form closed loops around the moving charge.

Areas of Agreement / Disagreement

Participants express differing views on the relationship between electric and magnetic fields, particularly regarding the conditions under which they arise. There is no consensus on whether the fields can overlap or share the same structure.

Contextual Notes

Some assumptions about the nature of electric and magnetic fields, as well as the definitions of static and moving charges, are not fully explored. The discussion does not resolve the complexities of field interactions.

EIRE2003
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Hi,


When has a charged particle have an electric field or a magnetic field, or do they have them at the same time?

Do the fields overlap and I am thinking both the fields have the same structure?

And is the electric field density and magnetic field density the exchange particles ie, photons flowing around the magnetic field lines in the 3 dimensions?

Thanks
 
Physics news on Phys.org
Static (non-moving) electric charges have static (non-moving) electric fields and no magnetic field.

As soon as the charge moves, the electric field begins to change. Whenever an electric field is changing, the magnetic field is no longer zero.

- Warren
 
A stationary charge has only electric field , it is only due to moving charges that Magnetic field is setup in the form of closed loops.

BJ
 
Thank you so much guys! Thats brilliant now I can get back to work! Thanks
 

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