Define Resistivity.
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A measure of the resisting power of a specified material to the flow of an electric current.
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Resistivity of a substance is numerical equal to the resistance of a Resistivity whose length is 1m and area of prosection is 1m². S.I unit of Resistivity is ohm meter.
Resistivity is depends on the length and thickness. It on the depends on nature of material and temperature.
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