 |
| A | = | Area |
| B | = | magnetic field strength |
| C | = | capacitance |
| d | = | distance |
| E | = | electric field strength |
 | = | emf |
| F | = | force |
| I | = | current |
 | = | length |
| P | = | power |
| Q | = | charge |
| q | = | point charge |
| R | = | resistance |
| r | = | distance |
| t | = | time |
| U | = | potential or stored energy |
| V | = | electric potenctial or potential difference |
 | = | velocity or speed |
| p | = | resistivity |
 | = | magnetic flux |
|
