Question #294557

A 3000-km long cable consists of 7 turns, with diameter of 0.73mm each. Calculate the resistance R of the cable. The resistivity of the copper wire is 3x10-6 Ω.cm.             


1
Expert's answer
2022-02-07T15:28:43-0500

The resistance is


R=4nρLπd2=150MΩ.R=\dfrac{4n\rho L}{\pi d^2}=150\text M\Omega.


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