This ohm's law reference table shows the resistance (r) for a range of voltage (v) values, assuming a current (i) of 2 A. Every figure is computed with the same engine that powers our Ohm's Law Calculator, so the numbers are exact.
| Voltage (V) | Resistance (R) | Power (P) |
|---|---|---|
| 3 V | 1.500 | 6.000 |
| 6 V | 3.000 | 12.000 |
| 9 V | 4.500 | 18.000 |
| 12 V | 6.000 | 24.000 |
| 18 V | 9.000 | 36.000 |
| 24 V | 12.000 | 48.000 |
| 36 V | 18.000 | 72.000 |
| 60 V | 30.000 | 120.000 |
| 84 V | 42.000 | 168.000 |
| 120 V | 60.000 | 240.000 |
How to use this table
Find the row closest to your voltage (v) and read across to the resistance (r). For a value between two rows, the real figure sits between them — or enter your exact numbers in the Ohm's Law Calculator for a precise answer.
Need a value that is not in the table? — the Ohm's Law Calculator does it instantly, for free, with the formula and a worked example built in.
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