What is the current through the circuit after the switch has been closed for t=1.73E-2 s?

An LR circuit is hooked up to a battery as shown in the figure, with the switch initially open. The resistance in the circuit is R=160 Ω, the inductance is L=3.60 H, and the battery maintains a voltage of E=30.0 V. At time t=0 the switch is closed