In II-1-5 [1] we learn that magnetism is a relativistic effect whose strength is v^2/c^2. This ratio is a very small number for the electron drift velocities as

In II-1-5 [1] we learn that magnetism is a relativistic effect whose strength is v^2/c^2. This ratio is a very small number for the electron drift velocities associated with typical currents in copper wires, yet we perceive magnetic forces because positive and negative electric charges in the wire are balanced to better than v^2/c^2. Can anyone indicate how + and - charges are distributed in a CME? Are there strong electric fields due to local charge imbalances? For the magnetic field, it's tempting to say that the drift velocity of charges in a CME is high (as much as 0.001c) but then wouldn't charges of both polarities be moving with that (average) speed? Perhaps there is some initial motion when the charges are ejected from the sun? [1] http://www.feynmanlectures.caltech.edu/II_01.html#Ch1-S5 http://www.feynmanlectures.caltech.edu/II_01.html#Ch1-S5