(Solved): 3) In the circuit shown, the capacitor is initially uncharged. The switch \( S \) is moved to posi ...

3) In the circuit shown, the capacitor is initially uncharged. The switch \( S \) is moved to position 1 a) At the instant of closing switch (time \( t=0 \) ) what is the ammeter reading? b) What is the time constant, \( \tau \), for charging the capacitor? c) How long does it take for the capacitor voltage to reach \( 20.0 \mathrm{~V} \) ? \[ M=10^{6}, k=10^{3}, \mu=10^{-6} \] c) After \( C \) is fully charged, the switch \( S \) is moved to position 2. How large is the charge on the capacitor 15 seconds later?