When the switch S in the circuit shown is closed, the time constant for the growth of current in R₂ is: A) L/R₁ B) L/R₂ C) L/(R₁ + R₂) D) L(R₁ + R₂)/(R₁R₂) E) (L/R₁ + L/R₂)/2

Question

Quizplus · Accepted Answer

When the switch is closed, the resistor RS1U1B12 will start to charge up the inductor L. The time constant for an RL circuit is L/RS, where L is the inductance and RS is the series resistance. Therefore, the time constant for the growth of current in RS1U1B12S1U1B0 is L/RS1U1B12S1U1B0.

When the Switch S in the Circuit Shown Is Closed