calculate the resistance of 1 kilometre long copper wire of radius 1 millimetre resistivity of copper is 1.72 into 10 raise to minus 8 ohm metre
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Answer:
resistance = 5.5 ohms
Explanation:
R=ρL/A
where ρ=1.72*10^-8
L=1000m
A=(Pi)*(0.001)^2
Put values to find R=5.5 ohms
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