This resistor power reference table shows the power dissipated for a range of voltage across resistor values, assuming a resistance of 100 Ω. Every figure is computed with the same engine that powers our Resistor Power Calculator, so the numbers are exact.
| Voltage across resistor | Power dissipated | Current |
|---|---|---|
| 3 V | 0.0900 | 0.0300 |
| 6 V | 0.3600 | 0.0600 |
| 9 V | 0.8100 | 0.0900 |
| 12 V | 1.4400 | 0.1200 |
| 18 V | 3.2400 | 0.1800 |
| 24 V | 5.7600 | 0.2400 |
| 36 V | 12.9600 | 0.3600 |
| 60 V | 36.0000 | 0.6000 |
| 84 V | 70.5600 | 0.8400 |
| 120 V | 144.0000 | 1.2000 |
How to use this table
Find the row closest to your voltage across resistor and read across to the power dissipated. For a value between two rows, the real figure sits between them — or enter your exact numbers in the Resistor Power Calculator for a precise answer.
Need a value that is not in the table? — the Resistor Power Calculator does it instantly, for free, with the formula and a worked example built in.
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