A Series RL Circuit with Inductance 6 $\Omega$ Is Connected to a 12

Multiple Choice

A series RL circuit with inductance 6.0 mH and resistance 20 $\Omega$ is connected to a 12.0-V battery of negligible internal resistance. The current in the circuit 4.0 $\mu$ s after the switch is closed is

A) 1.0 mA.
B) 4.0 mA.
C) 7.9 mA.
D) 0.40 A.
E) 0.59 A.