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

The time constant for a circuit with a resistor and an inductor is given by τ = L/R where L is the inductance and R is the resistance. In this circuit, the current will flow through R₂ and the inductor L when the switch S is closed. Therefore, the time constant for the growth of current in R₂ is τ = L/R₂.

When the Switch S in the Circuit Shown Is Closed