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Standard XII

Physics

Meter Bridge

I-V graph of ...

Question

I-V graph of a metallic wire at two different temperatures T1 and T2 is shown in the figure.Which of these two temperatures is higher and why?

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Solution

The slope of given graph,gives $\frac{V}{T} = \frac{1}{R}$ .Similar the slope,larger the resistance.As resistance of a metal increases with the increase of temperature,resistance at temperature $T_{2}$ is higher.

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I-V graph of a metallic wire at two different temperatures T1 and T2 is shown in the figure.Which of these two temperatures is higher and why?

The slope of given graph,gives VT=1R.Similar the slope,larger the resistance.As resistance of a metal increases with the increase of temperature,resistance at temperature T2 is higher.

The slope of given graph,gives $\frac{V}{T} = \frac{1}{R}$ .Similar the slope,larger the resistance.As resistance of a metal increases with the increase of temperature,resistance at temperature $T_{2}$ is higher.