I need to derive an expression (with respect to time) of the current flowing through the short circuit. The capacitors are charged to some voltage value.
I know the solution but I am trying to understand how the time-constant of each capacitor in the circuit is determined only by the resistor in its branch. How come the other resistors have no effect?
I other words, how come the time-constant of C1 is 20uX100 and R2 and R3 have no effect on C1 time-constant?