Answer to Question #343749 in Electric Circuits for Sa fresh

Electric Circuits

Question #343749

2 meter of resistance wire of Cross section .5mm² has a resistance of 2.2ohm c calculate the resistivity of the meter

Expert's answer

"R=\\rho\\frac{l}{A}"

"\\rho=\\frac{RA}{l}\\\\\n=\\frac{2.2*0.5*10^{-6}}{2}=5.5*10^{-7}\\:\\rm \\Omega\\cdot m"

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