calculate the resistance of 1km long copper wire of radius 1mm.(resistivity of copper wire=1.72×10^ -8ohm m)
plz answer me fast....
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Ans: R = ρl/A
R= 1.72×10^-8 × 1000/ 0.0000001.
By solving,
R= 172 ohm - metre
R= 1.72×10^-8 × 1000/ 0.0000001.
By solving,
R= 172 ohm - metre
parthgangwal:
can u send the pic
Is it right parthgangwal
i want steps
ok
sorry, my answer is 172
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