A circuit consists of a 10-mH coil, a 9.0-V battery, a parallel combination of a 48-$\Omega$ resistor and a 24-$\Omega$ resistor, and a switch, all in series. What is the time constant of this circuit?

Question

Quizplus · Accepted Answer

The time constant τ for an RL circuit is given by τ = L/R, where L is the inductance and R is the equivalent resistance. The equivalent resistance of the parallel resistors is 16 Ω. Thus, τ = 10 mH / 16 Ω = 6.25 x 10^-4 s.

A Circuit Consists of a 10-MH Coil, a 9 Ω\OmegaΩ Resistor and a 24-

A Circuit Consists of a 10-MH Coil, a 9 $\Omega$ Resistor and a 24-