![]() | Circuits, Formulas and Tables Electrical Engineering - Basic vocational knowledge (Institut für Berufliche Entwicklung, 201 p.) |
![]() | ![]() | 11. Basic symbols and formulas of electrical engineering |
![]() |
|
electric field strength |
|
| |
|
= voltage in V |
| |
|
= thickness of the dielectric in m | |
|
charge |
Q = I · t |
[As] | |
capacity |
|
[F] | |
|
Q = quantity of electricity in AS | |
|
|
C in F (1F = 1 AS/V) | | |
equation of dimensioning |
| | |
dielectric constant |
| | |
relative dielectric constant |
er: matter constant, relative to the vacuum | |
|
absolute dielectric constant |
| | |
dielectric flux density |
D = e · E | |