A very quick question about Ohm's Law: When I graph I (x-axis) vs. V (y-axis), I would get the standard linear relationship specified by Ohm's Law. One question asked: What would happen if the voltage were reversed? (I think it means what would happen if the polarity was reversed.) I think that the graph should remain the same, because then V would become negative and so would the current. But some others are saying that this would result in a negative slope for the graph. Can anyone help?