Multiple choice Ohm's law does not apply to Conductors when there is change in …….. temperature atmosphere Neither (a) nor (b) Both (a) and (b) Reveal answer Fill a bubble to check yourself A Correct answer Explanation Ohm's law states that current is proportional to voltage provided that physical conditions, especially temperature, remain constant. If the temperature changes, the resistance of the conductor changes, rendering the law inapplicable.