This rl time constant reference table shows the time constant for a range of inductance values, assuming a resistance of 100 Ω. Every figure is computed with the same engine that powers our RL Time Constant Calculator, so the numbers are exact.
| Inductance | Time constant |
|---|---|
| 0.13 H | 0.001300 |
| 0.25 H | 0.002500 |
| 0.38 H | 0.003800 |
| 0.5 H | 0.005000 |
| 0.75 H | 0.007500 |
| 1 H | 0.010000 |
| 1.5 H | 0.015000 |
| 2.5 H | 0.025000 |
| 3.5 H | 0.035000 |
| 5 H | 0.050000 |
How to use this table
Find the row closest to your inductance and read across to the time constant. For a value between two rows, the real figure sits between them — or enter your exact numbers in the RL Time Constant Calculator for a precise answer.
Need a value that is not in the table? — the RL Time Constant Calculator does it instantly, for free, with the formula and a worked example built in.
Related calculators
Continue exploring electrical calculators with these tools: Wire Resistance Calculator, Watts to Amps Calculator, kVA to kW Calculator, kWh to Joules Calculator, Resistance from Power Calculator.