When Do Charged Particles Exhibit Electric or Magnetic Fields?

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Charged particles exhibit electric fields when stationary, while moving charges generate both electric and magnetic fields. The electric field is static for non-moving charges, but changes when the charge moves, leading to the creation of a magnetic field. These magnetic fields form closed loops around the path of the moving charge. The discussion also touches on the relationship between electric and magnetic field densities and the role of photons in this context. Understanding these principles is crucial for grasping the behavior of charged particles in various scenarios.
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
 
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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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