# Belangrijke formules

| 3-1 | Wet van Ohm voor stroomberekening                         | $$\mathit{I}=\frac{\mathit{U}}{\mathit{R}}$$                                                                                                   |   |
| --- | --------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------- | - |
| 3-2 | Wet van Ohm voor spanningsberekening                      | $$\mathit{U}=\mathit{ }\mathit{I}\mathit{ }\times \mathit{R}$$                                                                                 |   |
| 3-3 | Wet van Ohm voor weerstandsberekening                     | $$\mathit{R}=\mathit{ }\frac{\mathit{U}}{\mathit{I}}$$                                                                                         |   |
| 3-4 | Bepalen van vermogen in functie van energie en tijd       | $$\mathit{P}=\mathit{ }\frac{\mathit{W}}{\mathit{t}}$$                                                                                         |   |
| 3-5 | Bepalen van vermogen in functie van stroom en weerstand   | $$\mathit{P}=\mathit{ }{\mathit{I}}^{2}\mathit{ }\times \mathit{R}$$                                                                           |   |
| 3-6 | Bepalen van vermogen in functie van spanning en stroom    | $$\mathit{P}=\mathit{U}\mathit{ }\times \mathit{I}$$                                                                                           |   |
| 3-7 | Bepalen van vermogen in functie van spanning en weerstand | $$\mathit{P}=\frac{ {\mathit{U}}^{2}}{\mathit{R}}$$                                                                                            |   |
| 3-8 | Bepalen rendement van een voeding                         | $$\mathit{ }=\frac{ {\mathit{P}}*{\mathit{O}\mathit{U}\mathit{T}}}{ {\mathit{P}}*{\mathit{I}\mathit{N}}}$$                                     |   |
| 3-9 | Bepalen van het uitgaand vermogen van een voeding         | $${\mathit{P}}*{\mathit{O}\mathit{U}\mathit{T}}={\mathit{P}}*{\mathit{I}\mathit{N}}-{\mathit{P}}\_{\mathit{L}\mathit{O}\mathit{S}\mathit{S}}$$ |   |


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