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 |
| capacitance | C | C = q/V | F (farad) = C V–1 | kg–1 m–2 s4 A2 |