6. An RL circuit is shown in the figure below. The switch is originally connected to position a, and the circuit reaches steady state. Vo " eee R (a). What are the circuit current, voltage across the resistor and voltage across the inductor, respectively? [3 marks] (b). If the switch is now turned from position a to b, draw the voltage and current as a function of time for the inductor in the RL circuit. Mark the time constant on the figures and explain what the time constant describes. [10 marks]