Electrical Resistivity:
The electrical resistivity measures the ability
of a substance to conduct electricity. The resistivity of
the various carbon allotropes span that between semiconducting
to insulating. This behavior is a consequence of the bonding
nature between the carbon atoms within the substance.
|
Material
|
Resistivity ( ohm*cm)
|
Material
|
Resistivity (ohm*cm)
|
|
Silver
|
1.61
|
Bismuth
|
106.8
|
|
Copper
|
1.70
|
Plutonium
|
141.4
|
|
Gold
|
2.20
|
Graphite
|
1375
|
|
Aluminum
|
2.65
|
Germanium
|
4.6x107
|
|
Pure Silicon
|
3.5
|
Diamond
|
2.7x109
|
|
Calcium
|
3.91
|
Deionized water
|
1.8x1013
|
|
Sodium
|
4.75
|
Iodine
|
1.3x1015
|
|
Tungsten
|
5.3
|
Phosphorus
|
1x1017
|
|
Brass
|
7.0
|
Quartz
|
1x1021
|
|
Uranium
|
30.0
|
Alumina
|
1x1022
|
|
Mercury
|
98.4
|
Sulfur
|
2x1023
|
The electrical resistance of an object is related
to the resistivity of the material that it was composed of
by:
where R is the resistance, r the material's
resistivity, L is the length of the conductor and A is the
cross-sectional area of the conductor, respectively.
Density
