What is electric resistivity of a material . Derive its S I unit .Describe an experiment to study the factor on which the resistance of a conducting wire depends.
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resistivity : when a conductor has length 1m
and cross sectional area is 1m²,then resistance of conductor is called resistivity.
R=pl/A
put l=1m and A=1m².
R=P
this resistance is called resistivity.
resistance of a conductor depends on dimensions of the conductor(volume ,length,area).
and cross sectional area is 1m²,then resistance of conductor is called resistivity.
R=pl/A
put l=1m and A=1m².
R=P
this resistance is called resistivity.
resistance of a conductor depends on dimensions of the conductor(volume ,length,area).
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