Q157 / 180 · KCET 2011 · Physics

The voltage $V$ and current $I$ graph for a conductor at two different temperatures $T_{1}$ and $T_{2}$ and shown in the figure. The relation between $T_{1}$ and $T_{2}$ is
Figure

  • Correct answer
    A
    $T_{1}>T_{2}$
  • B
    $T_{1} < T_{2}$
  • C
    $T_{1}=T_{2}$
  • D
    $T_{1}=\frac{1}{T_{2}}$

Solution

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

Hence, the correct answer is option: 'A'.

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