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  4. 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 T3 and T2 is

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Q. The voltage $V$ and current $I$ graphs for a conductor at two different temperatures $T_1$ and $T_2$ are shown in the figure. The relation between $T_3$ and $T_2$ isPhysics Question Image

KCETKCET 2011Current Electricity

Solution:

Resistance $=$ Slope of $V-I$ graph
Resistance $\propto$ Temperature
$R_{1}>R_{2}$
then $T_{1} >T_{2}$