Posted by Karl on Thursday, November 29, 2012 at 10:55am.
A 100 m long wire with a crosssectional 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 = Ωm, so
6Ω * 4mm^2 / 100*1000mm = .00024 Ωmm = 0.24 Ωm

BioChem  Zhixiang, Tuesday, February 17, 2015 at 12:39am
The correct answer is 2.4*10^7 ¦¸m
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