As known the DNA molecule has got negative electric charge. Imagine that linear (almost like a straight arrow) DNA is placed in water solution and we turn the electric field on. I would like to know if the DNA molecules can orientate/rotate so that they to stay along the field lines of the electric field. I have heard that that in Pulsed-field gel electrophoresis exactly this approach is used: the electric field can orientate the DNA molecules. So, is it possible?