Please answer all questions

A 9.15x10 * H inductor is placed in series with a 4.09x10 n resistor. At t = 0, the pair is connected to a 14.0 V battery. a) What is the time constant for this circuit? [s] b) If you let the circuit reach steady-state, what will the current through the resistor be? [A] c] How long will it take for the current through the resistor to reach 84.9 % of its steady-state value? [s] d] Att = 2.50 r , what is the current through the resistor? [A] e) Att = 2.50r , what is the voltage across the inductor? [V]