Sun June 17, 2012 By: Kiran Kumar

The voltage-current (V-I) graph of a metallic circuit at two different temperatures T1 and T2 is shown, which of the two temperatures is higher and why?

Expert Reply
Sun June 17, 2012
In case of metallic conductors, the resistance inccreases with increase in temperature.Thus the curve having more slope i.e. at a given voltage lower value of current and hence greater resistance is at a higher temperature
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