The time constant is the time for a change of 63.2% in the current through L or the voltage across C.

Question

Quizplus · Accepted Answer

The time constant in an RC (Resistor-Capacitor) or an RL (Resistor-Inductor) circuit is defined as the time it takes for the current through the inductor (L) or the voltage across the capacitor (C) to change by 63.2% of its initial difference from its final value. This is due to the exponential nature of the charging and discharging processes in these circuits.

The Time Constant Is the Time for a Change of 63.2