I'm having some trouble understanding Ohm's law. My trouble is with the different ways it is described when referring to ohmic and non-ohmic conductors. If someone can answer this question I think it will clear up my doubts. (I made up this question myself -- it's not homework!)
Which one of A and B is wrong, and why?:
A non-ohmic conductor is one whose resistance changes with increasing temperature, while an ohmic conductor is one whose resistance doesn't change with increasing temperature.
A non-ohmic conductor is one whose temperature changes with increasing voltage, while an ohmic conductor is one whose temperature doesn't change with increasing voltage.