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A 100 m long wire with a cross-sectional area of 4 mm2 has a resistance of 6 ohms. What is the resistivity of the material of the wire in Ùm?

  • Physics -

    resistivity = Ω-m, so

    6Ω * 4mm^2 / 100*1000mm = .00024 Ω-mm = 0.24 Ω-m

  • BioChem -

    The correct answer is 2.4*10^-7 ¦¸m

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