I know that a current creates a magnetic field and so do moving electric charges. My question is how fast a single charge moves so that it will create a magnetic field. Should its velocity be around c to make that?
The magnetic field of a single moving charge is a tricky calculation using Special Relativity, especially if the charge is accelerating.I think that no matter how much of the charge are given, there should have a magnetic made. But whether or not it is easy to found .
is it ?