Resistivity and resistance diff.
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Resistivity:- 1. It is defined as the resistance offered by a cube of a material of side 1m when current flows perpendicular to its opposite face.
2.Its S.I. units is ohm metre.
3.Resistivity does not change with change in length or area of Cross section but it changes with change in temperature.
Resistance:- 1. It is property of the conductor to resist flow of changes through it.
2. S.I. unit of resistance-Ohm.
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Resistance is the property of a conductor, which determines the quantity of current that passes through it when a potential difference is applied across it. A resistor is a electrical componet with a predetermined electrical resistance, like 1 ohm, 10 ohms 100 ohms 10000 ohms etc.
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