Homework Help: Physics

Posted by Karl on Thursday, November 29, 2012 at 10:55am.

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 - Steve, Thursday, November 29, 2012 at 11:36am
resistivity = Ω-m, so

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

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