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Current Electricity — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsCurrent Electricity2 Marks
Question
I-V graph at two different temperatures $T _1$ and $T _2$ for a metallic wire. Which temperature is greater and why? Image
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Answer

Slope of graph at the temperature $T_2$ is less. Hence resistance will be more at this temperature. With increase in temperature, resistance also increases. Hence, $T_2$ is greater.

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