Published by:
CGP EDU Academic Team
Published on: September 12, 2026
The current-voltage graphs for a given metallic wire at two different temperature T 1 and T 2 are shown in the figure. Which one is higher, T 1 or T 2
Text Solution
Verified by ExpertsThe correct answer is:
T 1
Step 1: In the graph, the slope of the lines represents the conductivity of the wire, which is inversely proportional to the resistance.
Step 2: A steeper slope indicates higher current for the same voltage, which means lower resistance.
Step 3: Between T1 and T2, if T1 has a steeper slope than T2, this indicates that T1 corresponds to a higher conductivity and lower resistance than T2, suggesting that T1 is at a higher temperature.
Therefore, T1 is higher than T2.
Step 2: A steeper slope indicates higher current for the same voltage, which means lower resistance.
Step 3: Between T1 and T2, if T1 has a steeper slope than T2, this indicates that T1 corresponds to a higher conductivity and lower resistance than T2, suggesting that T1 is at a higher temperature.
Therefore, T1 is higher than T2.
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