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 ?

In the circuit shown in the fig, the switch ‘S’ is closed at time

1.	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» 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`

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