The current-voltage graph for a given metallic wire at two different temperatures T 1 and T 2 is shown in the figure. The temperatures T 1 and T 2 are related as
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Slope of the 
curve at any point is equal to reciprocal of resistance at that point.
From the curve, slope for 
slope for T 2 .
Also, at higher temperature, resistance will be higher.
So, 
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