A series circuit consists of a 0.55 h inductor with internal resistance of 8.0 ω connected in series with a 4.0 ω resistor, an open switch, and an ideal 12 v batterya. When the switch is closed, what is the initial current through the 4.0-ohm resistor? b. What is the current through the 4.0-ohm resistor a very long time after the switch is closed?