Electrical and magnetic quantities
| Electrical and magnetic quantities |
| Name | Symbol |
| Permittivity of vacuum (electric constant) |
ε0 |
| Inductance |
L |
| Coefficient of self-induction |
L |
| Transformation ratio |
n |
| Magnetic induction |
B |
| Permeability of vacuum (magnetic constant) |
μ0 |
| Magnetic flux |
Ф |
| Power of an electric circuit |
Р |
| Magnetic field strength |
Н |
| Electric field strength |
Е |
| Volume density of electric charge |
ρ
|
| Relative permittivity |
εr, ε |
| Relative permeability |
μr, μ |
| Specific energy density of the magnetic field |
ωm |
| Specific energy density of the electric field |
ωe |
| Surface charge density |
σ
|
| Electric current density |
j, J |
| Absolute permittivity |
εa |
| Work function of the electron |
φ
|
| Potential difference |
U |
| Current |
I |
| Temperature coefficient of electrical resistance |
α
|
| Electrical conductivity |
γ, σ |
| Electrical resistivity |
ρ
|
| Frequency of electric current |
f, ν |
| Number of turns of a winding |
N, ω |
| Faraday number (constant) |
F |
| Electric capacitance |
C |
| Electric induction |
D |
| Electrical conductance |
G, g |
| Electric dipole moment of a molecule |
p |
| Electric charge (quantity of electricity) |
Q |
| Electric potential |
V, φ |
| Electric voltage |
U |
| Electrical resistance |
R, r |
| Electromotive force |
E, Ε |
| Electrochemical equivalent |
k |
| Energy of the magnetic field |
Wm |
| Energy of the electric field |
We |
| Electromagnetic energy |
W |