Electromagnetism is a type of force interaction which occurs between electrically charged particles.
| SI Electromagnetism units |
| Quantity
|
Name
|
Symbol
|
Dimensions
|
| Current
|
ampere ( SI base unit )
|
I
|
A
|
| Electric charge , Quantity of electricity
|
coulomb
|
C
|
A•s
|
| Potential difference
|
volt
|
V
|
J/C = kg•m2•s−3•A−1
|
| Electric field strength
|
metre
|
V/m
|
N/C = kg•m•s−3•A−1
|
| Resistance , Impedance , Reactance
|
ohm
|
Ω
|
V/A = kg•m2•s−3•A−2
|
| Resistivity |
ohm metre
|
Ω•m
|
kg•m3•s−3•A−2
|
| Electrical power |
watt |
W
|
V•A = kg•m2•s−3
|
| Capacitance |
farad |
F
|
C/V = kg−1•m−2•A2•s4
|
| Elastance |
reciprocal farad
|
F−1
|
kg•m2•A−2•s−4
|
| Permittivity |
farad per metre |
F/m |
kg−1•m−3•A2•s4
|
| Conductance , Admittance , Susceptance
|
siemens |
S |
Ω−1 = kg−1•m−2•s3•A2
|
| Conductivity |
siemens per metre |
S/m |
kg−1•m−3•s3•A2
|
| Magnetic flux |
weber |
Wb |
V•s = kg•m2•s−2•A−1
|
| Magnetic flux density |
tesla |
T |
Wb/m2 = kg•s−2•A−1
|
| magnetic induction |
ampere per metre |
A/m |
m−1•A
|
| Reluctance |
ampere -turns per weber |
A/Wb |
kg−1•m−2•s2•A2
|
| Inductance |
henry
|
H
|
Wb/A = V•s/A = kg•m2•s−2•A−2
|
| Permeability
|
metre |
H/m |
kg•m•s−2•A−2
|
| Magnetic susceptibility |
(dimensionless) |
χm |
|
| Electric susceptibility
|
(dimensionless)
|
χe
|
|
|