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Encyclopedia > Electric conductance

Electrical conductance is an electrical phenomenon where a material contains movable particles with electric charge, which can carry electricity. When a difference of electrical potential is placed across a conductor, its movable charges flow, and an electric current appears.


The SI unit of electrical conductance is the siemens, (named after Werner von Siemens)


SI electricity units

SI electromagnetism units

edit  (http://en.wikipedia.org/w/index.php?title=Template:SI_electromagnetism_units&action=edit)

Name Symbol Dimensions Quantity
ampere (SI base unit) A A Current
coulomb C A新 Electric charge, Quantity of electricity
volt V J/C = kg搶2−3−1 Potential difference
ohm Ω V/A = kg搶2−3−2 Resistance, Impedance, Reactance
ohm metre Ω搶 kg搶3−3−2 Resistivity
farad F C/V = kg−1−224 Capacitance
farad per metre F/m kg−1−324 Permittivity
reciprocal farad F−1 kg12−2−4 Elastance
siemens S Ω−1 = kg−1−232 Conductance, Admittance, Susceptance
siemens per metre S/m kg−1−332 Conductivity
weber Wb V新 = kg搶2−2−1 Magnetic flux
tesla T Wb/m2 = kg新−2−1 Magnetic flux density
ampere per metre A/m m−1 magnetic induction
ampere-turns per weber A/Wb kg−1−222 Reluctance
henry H V新/A = kg搶2−2−2 Inductance
henry per metre H/m kg搶新−2−2 Permeability
(dimensionless) - - Magnetic susceptibility

See also

External links


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