SI electromagnetism units

SI electromagnetism units
Symbol[1] Name of quantity Unit name Symbol Base units
E energy joule J kg⋅m2⋅s−2 = C⋅V
Q electric charge coulomb C A⋅s
I electric current ampere A A (= W/V = C/s)
J electric current density ampere per square metre A/m2 A⋅m−2
ΔV; Δφ; ε potential difference; voltage; electromotive force volt V J/C = kg⋅m2⋅s−3⋅A−1
R; Z; X electric resistance; impedance; reactance ohm Ω V/A = kg⋅m2⋅s−3⋅A−2
ρ resistivity ohm metre Ω⋅m kg⋅m3⋅s−3⋅A−2
P electric power watt W V⋅A = kg⋅m2⋅s−3
C capacitance farad F C/V = kg−1⋅m−2⋅A2⋅s4
ΦE electric flux volt metre V⋅m kg⋅m3⋅s−3⋅A−1
E electric field strength volt per metre V/m N/C = kg⋅m⋅A−1⋅s−3
D electric displacement field coulomb per square metre C/m2 A⋅s⋅m−2
ε permittivity farad per metre F/m kg−1⋅m−3⋅A2⋅s4
χe electric susceptibility (dimensionless) 1 1
G; Y; B conductance; admittance; susceptance siemens S Ω−1 = kg−1⋅m−2⋅s3⋅A2
κ, γ, σ conductivity siemens per metre S/m kg−1⋅m−3⋅s3⋅A2
B magnetic flux density, magnetic induction tesla T Wb/m2 = kg⋅s−2⋅A−1 = N⋅A−1⋅m−1
Φ, ΦM, ΦB magnetic flux weber Wb V⋅s = kg⋅m2⋅s−2⋅A−1
H magnetic field strength ampere per metre A/m A⋅m−1
L, M inductance henry H Wb/A = V⋅s/A = kg⋅m2⋅s−2⋅A−2
μ permeability henry per metre H/m kg⋅m⋅s−2⋅A−2
χ magnetic susceptibility (dimensionless) 1 1
µ magnetic dipole moment ampere square meter A⋅m2 A⋅m2 = J⋅T−1 = 103 emu
σ mass magnetization ampere square meter per kilogram A⋅m2/kg A⋅m2⋅kg−1 = emu⋅g−1 = erg⋅G−1⋅g−1

See also

References
  1. International Union of Pure and Applied Chemistry (1993). Quantities, Units and Symbols in Physical Chemistry, 2nd edition, Oxford: Blackwell Science. ISBN 0-632-03583-8. pp. 14–15. Electronic version.


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