STANDARD Physics Temperature Dependence of Resistance MCQ Question
The voltage V and current I graphs for a conductor at two different temperatures T₁ and T₂ are shown in the figure. The relation between T₁ and T₂ is
T₁ > T₂
T₁ < T₂
T₁ = T₂
T₁ = 1/T₂
Correct Answer
Detailed Explanation
The slope of V-I graph gives the resistance of a conductor at a given temperature. From the graph, it follows that resistance of a conductor at temperature T₁ is greater than at temperature T₂. As the resistance of a conductor is more at higher temperature and less at lower temperature, hence T₁ > T₂.
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