How many T-state does it take an inductor current to decay to zero in a DC circuit?

In a DC circuit with an inductor, the current decays to zero during the switching off phase, which can be approximated as taking several time constants (T-states) depending on the circuit's resistance and inductance. The time constant ( \tau ) is given by ( \tau = L/R ), where ( L ) is the inductance and ( R ) is the resistance. Generally, it takes about 5 time constants for the current to decay to less than 1% of its initial value, effectively reaching zero. Therefore, the number of T-states required for the current to decay to zero is around 5.