3- The capacitor in the circuit shown is initially uncharged and the switch S is closed at time t=0
a) Find the currents $i_1$, $i_2$ and $i_3$ at t=0
b) Find the currents $i_1$, $i_2$ and $i_3$ at t→∞
c) What is the charge on the capacitor at t→∞
d) Find the charge on the capacitor for t>0
Find the time dependency of the charge on capacitance for t>0