In the circuit shown in the fig, the switch ‘S’ is closed at time `t = 0`. The current in branch AB is represented by `z` and is taken to be positive when it is from A to B.
(a) Write the value of `z` immediately after the switch is closed.
(b) Write the value of `z` infinite time after the switch is closed.
(c) Write `z` as a function of time (t) and plot the variation of `z` with time.
(d) At what time `t_(0)` the current `z` becomes zero ?

Answer

(a) `(V)/(R)`
(b) `-(V)/(3R)`
(c) `Z=(4V)/(3R)[e^(-(3t)/(RC))-(1)/(4)]`
`(##IJA_PHY_V02_C08_E01_104_A01##)`
(d) `t_(0) = (2R)/(3) l n2`