RL Circuit
An electrical circuit containing resistors and inductors, characterized by an exponential delay in current growth and decay governed by time constant τ = L/R.
Governing formula
I(t) = (V₀ / R) (1 - e^(-t / τ)), τ = L / R
SI unit
s (Seconds)
In depth
Inductors oppose rapid changes in current, delaying steady-state current establishment while storing energy in their magnetic field.
Examples in the real world
Transient suppression circuits protecting power electronics from voltage spikes during relay or motor switching.