Orders of magnitude (resistance)

List of orders of magnitude for electrical resistance

Factor	Multiple	Value	Item
0	0 Ω	0 Ω	Resistance of a superconductor
10-8	10 nΩ	10 nΩ
10-7
10-6	Microohm μΩ	1.629 x 10-7	1 cm3 block of silver
10-5
10-4
10-3	Milliohm mΩ	1 mΩ	19.2 cm length of 12 AWG copper wire (2.053 mm diameter)
10-2	Centiohm cΩ	1.68 cΩ	1 meter length of copper wire with 1 mm2 cross section
		1-5 cΩ	Zero-ohm link
10-1	Deciohm dΩ	2 dΩ	1 meter path in 35g/kg salinity seawater at 20°C
100	Ohm Ω	9.8 Ω	Circular mil-foot of silver
101	Decaohm daΩ	2.99792458 x 101 Ω	Planck impedance
102	Hectoohm hΩ	6.60 x 102 Ω	Circular mil-foot of Nichrome
103	Kilohm kΩ	± 1 x 103 Ω	Resistance of the human body through wet or broken skin
104
105		± 1 x 105 Ω	Resistance of the human body with dry skin
106	Megohm MΩ
107
108
109	Gigohm GΩ
1010	10 gigohm GΩ	9.9 x 1010 Ω	Highest resistor code on common circuits (white white white)
1011	100 gigohm GΩ
1012	Terohm TΩ
1013	10 terohm TΩ
1014	100 terohm TΩ	2 x 1014 Ω	1 meter path through quartz, upper limit
1015	Petohm PΩ
1016	10 petohm PΩ
1017	100 petohm PΩ
1018	Exohm EΩ
1019	10 exohm EΩ	2 x 1019 Ω	1 meter path through sulphur at standard temperature and pressure

See also

• Electrical resistivities of the elements (data page)