Consider a charged particle (electron or proton) at rest. It is surrounded by its own electric field.
Now consider an electron moving with certain velocity (less than speed of light), Still is there electric field around it?
i. If it has electric field around it, why is it that when electrons are moving in a conductor (i.e.. current if flowing in a conductor) there is no electric field outside the conductor?
ii. Now, when a current is flowing in a conductor (I'm not sure what happens if the motion is not inside conductor) it produces magnetic field around it. I'm lost. What happened to the electric field? Is it still there? Are there both electric field & magnetic field? Why don't we discuss about it?
Hypothetically, If the electron is moving with speed more than that of light. What happens now?
I'm totally lost. Kindly some one clarify these issues.