Units

Units Used in Physics (Fundamental units in bold)
Quantity Common Symbol Unit Unit in Terms of Base SI Units
Acceleration [latex]\mathbf{\overset{\to }{a}}[/latex] m/s2 m/s2
Amount of substance n mole mol
Angle [latex]\theta ,\varphi[/latex] radian (rad)
Angular acceleration [latex]\mathbf{\overset{\to }{\alpha }}[/latex] rad/s2 s−2
Angular frequency [latex]\omega[/latex] rad/s s−1
Angular momentum [latex]\mathbf{\overset{\to }{L}}[/latex] [latex]\text{kg}\cdot {\text{m}}^{2}\text{/s}[/latex] [latex]\text{kg}\cdot {\text{m}}^{2}\text{/s}[/latex]
Angular velocity [latex]\mathbf{\overset{\to }{\omega }}[/latex] rad/s s−1
Area A m2 m2
Atomic number Z
Capacitance C farad (F) [latex]{\text{A}}^{2}\cdot {\text{s}}^{4}\text{/}\text{kg}\cdot {\text{m}}^{2}[/latex]
Charge q, Q, e coulomb (C) [latex]\text{A}\cdot \text{s}[/latex]
Charge density:
    Line [latex]\lambda[/latex] C/m [latex]\text{A}\cdot \text{s/m}[/latex]
    Surface [latex]\sigma[/latex] C/m2 [latex]\text{A}\cdot {\text{s/m}}^{2}[/latex]
    Volume [latex]\rho[/latex] C/m3 [latex]\text{A}\cdot {\text{s/m}}^{3}[/latex]
Conductivity [latex]\sigma[/latex] [latex]\text{1/}\text{Ω}\cdot \text{m}[/latex] [latex]{\text{A}}^{2}\cdot {\text{s}}^{3}\text{/kg}\cdot {\text{m}}^{3}[/latex]
Current I ampere A
Current density [latex]\mathbf{\overset{\to }{J}}[/latex] A/m2 A/m2
Density [latex]\rho[/latex] kg/m3 kg/m3
Dielectric constant [latex]\kappa[/latex]
Electric dipole moment [latex]\mathbf{\overset{\to }{p}}[/latex] [latex]\text{C}\cdot \text{m}[/latex] [latex]\text{A}\cdot \text{s}\cdot \text{m}[/latex]
Electric field [latex]\mathbf{\overset{\to }{E}}[/latex] N/C [latex]\text{kg}\cdot \text{m/A}\cdot {\text{s}}^{3}[/latex]
Electric flux [latex]\text{Φ}[/latex] [latex]\text{N}\cdot {\text{m}}^{2}\text{/}\text{C}[/latex] [latex]\text{kg}\cdot {\text{m}}^{3}\text{/A}\cdot {\text{s}}^{3}[/latex]
Electromotive force [latex]\epsilon[/latex] volt (V) [latex]\text{kg}\cdot {\text{m}}^{2}\text{/A}\cdot {\text{s}}^{3}[/latex]
Energy E,U,K joule (J) [latex]\text{kg}\cdot {\text{m}}^{2}{\text{/s}}^{2}[/latex]
Entropy S J/K [latex]\text{kg}\cdot {\text{m}}^{2}{\text{/s}}^{2}\cdot \text{K}[/latex]
Force [latex]\mathbf{\overset{\to }{F}}[/latex] newton (N) [latex]\text{kg}\cdot {\text{m/s}}^{2}[/latex]
Frequency f hertz (Hz) s−1
Heat Q joule (J) [latex]\text{kg}\cdot {\text{m}}^{2}{\text{/s}}^{2}[/latex]
Inductance L henry (H) [latex]\text{kg}\cdot {\text{m}}^{2}{\text{/A}}^{2}\cdot {\text{s}}^{2}[/latex]
Length: [latex]\ell ,L[/latex] meter m
    Displacement [latex]\Delta x,\Delta \mathbf{\overset{\to }{r}}[/latex]
    Distance d, h
    Position [latex]x,y,z,\mathbf{\overset{\to }{r}}[/latex]
Magnetic dipole moment [latex]\mathbf{\overset{\to }{\mu }}[/latex] [latex]\text{N}\cdot \text{J/T}[/latex] [latex]\text{A}\cdot {\text{m}}^{2}[/latex]
Magnetic field [latex]\mathbf{\overset{\to }{B}}[/latex] [latex]\text{tesla}(\text{T})=({\text{Wb/m}}^{2})[/latex] [latex]\text{kg/A}\cdot {\text{s}}^{2}[/latex]
Magnetic flux [latex]{\text{Φ}}_{\text{m}}[/latex] weber (Wb) [latex]\text{kg}\cdot {\text{m}}^{2}\text{/A}\cdot {\text{s}}^{2}[/latex]
Mass m, M kilogram kg
Molar specific heat C [latex]\text{J/mol}\cdot \text{K}[/latex] [latex]\text{kg}\cdot {\text{m}}^{2}{\text{/s}}^{2}\cdot \text{mol}\cdot \text{K}[/latex]
Moment of inertia I [latex]\text{kg}\cdot {\text{m}}^{2}[/latex] [latex]\text{kg}\cdot {\text{m}}^{2}[/latex]
Momentum [latex]\mathbf{\overset{\to }{p}}[/latex] [latex]\text{kg}\cdot \text{m/s}[/latex] [latex]\text{kg}\cdot \text{m/s}[/latex]
Period T s s
Permeability of free space [latex]{\mu }_{0}[/latex] [latex]{\text{N/A}}^{2}\text{=}(\text{H/m})[/latex] [latex]\text{kg}\cdot {\text{m/A}}^{2}\cdot {\text{s}}^{2}[/latex]
Permittivity of free space [latex]{\epsilon }_{0}[/latex] [latex]{\text{C}}^{2}\text{/N}\cdot {\text{m}}^{2}\text{=}(\text{F/m})[/latex] [latex]{\text{A}}^{2}\cdot {\text{s}}^{4}\text{/kg}\cdot {\text{m}}^{3}[/latex]
Potential V [latex]\text{volt}(\text{V})=(\text{J/C})[/latex] [latex]\text{kg}\cdot {\text{m}}^{2}\text{/A}\cdot {\text{s}}^{3}[/latex]
Power P [latex]\text{watt}(\text{W})=(\text{J/s})[/latex] [latex]\text{kg}\cdot {\text{m}}^{2}{\text{/s}}^{3}[/latex]
Pressure p [latex]\text{pascal}(\text{Pa})=({\text{N/m}}^{2})[/latex] [latex]\text{kg/m}\cdot {\text{s}}^{2}[/latex]
Resistance R [latex]\text{ohm}(\text{Ω})=(\text{V/A})[/latex] [latex]\text{kg}\cdot {\text{m}}^{2}{\text{/A}}^{2}\cdot {\text{s}}^{3}[/latex]
Specific heat c [latex]\text{J/kg}\cdot \text{K}[/latex] [latex]{\text{m}}^{2}{\text{/s}}^{2}\cdot \text{K}[/latex]
Speed [latex]\nu[/latex] m/s m/s
Temperature T kelvin K
Time t second s
Torque [latex]\mathbf{\overset{\to }{\tau }}[/latex] [latex]\text{N}\cdot \text{m}[/latex] [latex]\text{kg}\cdot {\text{m}}^{2}{\text{/s}}^{2}[/latex]
Velocity [latex]\mathbf{\overset{\to }{v}}[/latex] m/s m/s
Volume V m3 m3
Wavelength [latex]\lambda[/latex] m m
Work W [latex]\text{joule}(\text{J})=(\text{N}\cdot \text{m})[/latex] [latex]\text{kg}\cdot {\text{m}}^{2}{\text{/s}}^{2}[/latex]

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