define resistivity and its SI unit. draw a graph showing variation of resistivity with change in temperature for a typical semiconductor
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resistivity of a material is the resistance of a wire of that material of unit length and unit area of cross section.
its SI unit is ohm metre.
I m not sure abt the graph but it shud be a straight line originating from the top and decreasing with increase in temperature.
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Explanation:
The resistivity of a material is the resistance of a wire of that material of unit length and unit area of cross-section. Its S.I. unit is ohm-metre.
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