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Haya asked in Science & MathematicsPhysics · 2 months ago

What is the resistance per meter of an gold wire with a cross-sectional area of 2.6×10−7 m2  .?

2 Answers

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  • Anonymous
    2 months ago

    Xsection A = 2.6*10^−7 m^2 = 0.26 mm^2

    gold resistivity ρg = 24.4*10^-3 ohm*mm^2/m @ 20°C

    reistance R = ρg*L/A = 24.4*10^-3*1*10^2/26 = 2.44/26 = 0.094 ohm

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  • alex
    Lv 7
    2 months ago

    Formula

    R = ρL/A

    with R = resistance

    ρ=resistivity

    L=length 

    A=cross-sectional area 

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