In the circuit shown, the switch ‘S’ has been closed for a long time and then opens at t = 0.
(a) Find the current through the inductor just before the switch is opened.
(b) Find the current I a long time after the switch is opened.
(c) Find current I as a function of time after the switch is opened. Also write the current through the cell as a function of time.

Answer

(a) 6A (b) 44
(c) `I = 4 + 2e^(-5t)`, current through cell `= (21)/(4) + 2e^(-5t)`