Resistivity

Electrical resistivity is also known as specific electrical resistance or volume resistivity. It is a measure of how strongly a material opposes the flow of  current under sufficient potential pressure acting on one unit of area and over one unit of length that will allow 1 ampere of current.

ρ=E/J  where E is electric field intensity, in volt/meter and J is current density, in ampere/area (meter2).

Material Resistivity (Ω·m) at 20 °C  ρ Temperature coefficient* [K−1]
Silver 1.59×10−8 0.0038
Copper 1.72×10−8 0.0039
Gold 2.44×10−8 0.0034
Aluminium 2.82×10−8 0.0039
Calcium 3.36×10−8 ?
Tungsten 5.60×10−8 0.0045
Zinc 5.90×10−8 ?
Nickel 6.99×10−8 ?
Iron 1.0×10−7 0.005
Tin 1.09×10−7 0.0045
Platinum 1.06×10−7 0.00392
Lead 2.2×10−7 0.0039
Manganin 4.82×10−7 0.000002
Constantan 4.9×10−7 0.00001
Mercury 9.8×10−7 0.0009
Nichrome[4] 1.10×10−6 0.0004
Carbon[5] 3.5×10−5 −0.0005
Germanium[5] 4.6×10−1 −0.048
Silicon[5] 6.40×102 −0.075
Glass 1010 to 1014 ?
Hard rubber approx. 1013 ?
Sulfur 1015 ?
Paraffin 1017 ?
Quartz (fused) 7.5×1017 ?
PET 1020 ?
Teflon 1022 to 1024 ?
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