Calculate resistivity of wire of length 1m having diameter of 1mm and resistance of 10 ohm at 20 degree celcius
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Explanation:
Resistance, R=10 ohm
length, l=1m
diameter, d=1mm=0.001m
radius, r=0.001/2m=0.0005m
Resistivity=R×Area÷length
=10×3.14×0.0005×0.0005÷1
=0.00000785ohm m
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