9.What is electric resistivity of a material ? Derive its SIunit. Describe an experiment to
study the factor on which the resistance of a conducting wire depends.
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Electrical resistivity (also known as resistivity, specific electrical resistance, or volume resistivity) quantifies how strongly a given material opposes the flow of electric current. A low resistivity indicates a material that readily allows the movement of electric charge.
Siemens per meter
Electrical conductivity
Ohm meter
Electrical resistivity
Electrical conductivity/SI units
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If I is the length of the conductor, A its area of the crosssection and R its total then,
R=pl/a
It's SI unit is ohm metres
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