STANDARDPhysics-Current Electricity
STANDARD Physics Temperature Dependence of Resistance MCQ Question
Type: MCQ-conceptual-Medium-Class 12
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
A
T₁ > T₂
B
T₁ < T₂
C
T₁ = T₂
D
T₁ = 1/T₂
Correct Answer
Option A
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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