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Electrical Units
This list presents most of the units that you will encounter in electrical engineering applications and literature.
If you know of others that should be added, please send me an e-mail.
Visit NIST for all constants, units, and uncertainties. This is their Extensive Listing of constants.
Here is a list of electrical constants.
| Name (Symbol) | Base Unit | Unit Symbol |
| Angular Frequency | radians/second | ω |
| Admittance (Y) | siemens | S |
| Capacitance (C) | farad | F |
| Capacitive Reactance (XC) | ohm | Ω |
| Center Frequency (Fc) | hertz | Hz |
| Charge | coulomb | C |
Conductance (G) [ ] |
siemen [mho] | S ()
[1/Ω] |
| Conductivity (σ) | siemens/meter | S/m |
| Current (I) | ampere | A |
| Dipole Moment | coulomb·meter | p |
| Electric Charge | coulomb | Q |
| Electric Flux | coulomb | Ψ |
| Electric Flux Density | coulomb/meter2 | D |
| Electric Susceptibility | 1 | χe |
| Energy (E) | joule | J |
| Frequency | hertz | Hz |
| Impedance (Z) | ohm | Ω |
| Inductance (L) | henry | H |
| Inductive Reactance (XL) | ohm | Ω |
| Joule | watt·second | J |
| Linear Current Density | amperes/meter2 | A |
| Magnetic Field | tesla | T |
| Magnetic Flux | weber | Φ |
| Magnetic Flux Linkage | weber | Λ |
| Magnetic Flux Density | tesla | B |
| Magnetic Susceptibility | 1 | χμ |
| Magnetic Vector Potential | weber/meter | A |
| Magnetization | ampere/meter | M |
| Magnetomotive Force | weber | Wb |
| Mutual Inductance | henry | Li,j Mi,j |
| Permeability | henrys/meter | μ |
| Permittivity | farads/meter | ε |
| Phase Angle | radian | Φ |
| Phase Coefficient | radian | β |
| Potential (V) | volt | V |
| Power (P) | watt | W |
| Reluctance (R) | 1/henrys | 1/H |
| Reluctivity | meters/henry | ν |
| Resistance (R) | ohm | Ω |
| Resistivity (ρ) | ohm·meter | Ω*m |
| Resonant Frequency (Fr) | hertz | Hz |
| Surface Density of Charge | coulombs/meter2 | σ |
| Susceptance (B) | siemen | S |
| Volume Density of Charge | coulombs/meter3 | ρ |
| Volume Resistivity | ohms/meter3 | ρ |
| Wavelength | meter | λ |
Copyright: 1996 - 2026 |
About RF Cafe RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a lady's voice announced "You've Got Mail" when a new message arrived... |
Copyright 1996 - 2026 All trademarks, copyrights, patents, and other rights of ownership to images
and text used on the RF Cafe website are hereby acknowledge My Hobby Website: My Daughter's Website: |
