Harry: 
 >
 >"Bilge" <dubious@radioactivex.lebesque-al.net> wrote in message
 >news:slrnbvraov.dan.dubious@radioactivex.lebesque-al.net...

 >>   The motion of a charge next to a wire can be found in a fairly
 >> straight-forward way just by finding the B-field from the wire and
 >> and using the lorentz force law. (Working in the frame in which the
 >> field from the wire is purely magnetic).
 >
 >True. So now we have:
 >
 >