Resistivity and Temperature Coefficient at 20 C
Material | Resistivity r (ohm m) | Temperature coefficient per degree C | Conductivity s x 107 /Wm |
Silver | 1.59 | x10^-8 | .0061 | 6.29 |
Copper | 1.68 | x10^-8 | .0068 | 5.95 |
Aluminum | 2.65 | x10^-8 | .00429 | 3.77 |
Tungsten | 5.6 | x10^-8 | .0045 | 1.79 |
Iron | 9.71 | x10^-8 | .00651 | 1.03 |
Platinum | 10.6 | x10^-8 | .003927 | 0.943 |
Manganin | 48.2 | x10^-8 | .000002 | 0.207 |
Lead | 22 | x10^-8 | ... | 0.45 |
Mercury | 98 | x10^-8 | .0009 | 0.10 |
Nichrome (Ni,Fe,Cr alloy) | 100 | x10^-8 | .0004 | 0.10 |
Constantan | 49 | x10^-8 | ... | 0.20 |
Carbon* (graphite) | 3-60 | x10^-5 | -.0005 | ... |
Germanium* | 1-500 | x10^-3 | -.05 | ... |
Silicon* | 0.1-60 | ... | -.07 | ... |
Glass | 1-10000 | x10^9 | ... | ... |
Quartz (fused) | 7.5 | x10^17 | ... | ... |
Hard rubber | 1-100 | x10^13 | ... | ... |
*The resistivity of semiconductors depends strongly on the presence of impurities in the material, a fact which makes them useful in solid state electronics.
Data from Giancoli
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Index
Tables
Reference Giancoli |