I read somewhere that electrons produce constant magnetic field when moving with constant velocity. But I think it is not true.I thought a reason for it Imagine that an electron is stationary and I am moving with a constant velocity. In my respect electron is moving, so, it should produce magnetic field. But in ground frame electron should not. This is a contradiction as both frames of references are inertial. Hence electron should not produce magnetic field. Am I wrong or electron actually doesnt produce constant magnetic field?