Question 21 No Initial energy in Inductor. V 480 Volts. Switch S has been open for…

Question 21 No Initial energy in Inductor. V 480 Volts. Switch S has been open for long. R1 R2 R3- R4 R5 80 Ohms. Inductance L-4 H enries. Switch S closed at timet-0. .a) What are values of current Is through Switch, and current lIL current IR1 through R1, and voltage VL across inductance atto-, just before the switch is closed? R1 R3 It Is R2 . at (t0- Is… IL R. Vu .b) What are the values of IS, IL, and IR1, att-o+, soon after the switch is closed? IR1— what is the value of time constant in the system, after the switch is closed? what is IL at t-0+ in Amps; d) What are the values of ls, IL, IR1 and VL after new steady state is established, after switch closing? d. IS IL