Answer to Question #308655 in Physics for chan

Question #308655

What is the resistance of a 25.0-m-long piece of 12-gauge copper wire having a 2.053-mm diameter?

Expert's answer

The resistance of a wire

"R=\\rho\\frac{l}{A}\\\\\n=1.68*10^{-8}*\\frac{25.0}{3.14*(2.053*10^{-3}\/2)^2}\\\\\n=0.13\\:\\Omega"

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