Imagine a piece of conducting wire with qurrent i and eross section a and a negative oharge q at a distance of r from the center of the wire. now uging two different reference frames: (1) where the charge q and the negative ourrent carriers in the wire are both moving to the right with velootty vand (u) where the wire itself moving with velocity v to the left and the charge q in stationary, show that the force experienced by the charge in exactly the same.