Electrical units
Level 0 (green)- this is basic material that you have probably encountered already, although the approach may be slightly different. No prior knowledge is assumed.
| Quantity | symbol | def | unit | base units |
| current | i | A (ampere) | A | |
| charge | q | q = it | C (coulomb) | A s |
| potential | V | V = U/q | V (volt) = J C–1 | kg m2 s–3 A–1 |
| electric field | E | E = F/q | V m–1 = N C–1 | kg m s–3 A–1 |
| resistance | R | R = V/i | Ω (Ohm) = V A–1 | kg m2 s–3 A–2 |
| conductance | G | G = i/V | S (Siemens) = A V–1 | kg–1 m–2 s3 A2 |
| conductivity | κ | κ = Gl/A | S m–1 | kg–1 m–3 s3 A2 |
| molar conductivity |
Λ | Λ = κ/c | S m2 mol–1 | kg–1 s3 A2 mol–1 |
| mobility | u | u = v/E | m2 s–1 V–1 | kg–1 s2 A |
| magnetic field | B | F = qv×B | T (Tesla) | kg s–2 A–1 |