F= q(v x B) B= v x q*k*d/r^2 It is a basic physics knowledge magnetic field forms around moving charge, it tell us magnetic field is zero when charge is not moving and strength of magnetic field increases as velocity increases, right? Magnetic potential vector field increases with "absolute velocity", not relative velocity. Perhaps I got the equations wrong, but if not what is that velocity relative to, Aether? Two parallel wires: http://www.magnet.fsu.edu/education/tutorials/java/parallelwires/ 1.) velocity relative to field? 2.) velocity relative to wires?