calculate the resistivity of the material of wire 1.0m long and 0.4mm in diameter and having a resistance of 2 ohm
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R=(resistivity)*length/area
Resistivity=RA/L
= R*pie *r^2/L
=1.256x10^-3. Ohm-m
Resistivity=RA/L
= R*pie *r^2/L
=1.256x10^-3. Ohm-m
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