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

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

T1 > T2 in the graph shown above. Because conductor resistance is higher at high temperature T1 than at low temperature T2, the straight line A is steeper than the line B. As a result, we may deduce that the resistance of a conductor increases as the temperature rises.

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