Question

Draw a V-I graph for a conductor at two different temperatures. Waht conclusion do you draw from your graph for the variation of resistance of the conductor with temperatue?

Answer 1

In the above graph, T₁ > T₂. The straight line A is steeper than the line B, which leads us to conclude that the resistance of the conductor is more at a higher temperature T₁ than at a lower temperature T₂. Thus, we can say that resistance of a conductor increases with the increase in temperature.