Two capacitors in series are charged by a 12.0-V battery that has an internal resistance of 1.00 ohm. There is a 5.00-ohm resistor in series between the capacitor, as shown in this figure: What is the time constant of the charging circuit? I know time constant, tau, equals R*C, but I don't know how to apply it to a circuit containing multiple capacitors. I believe the top plate of the 3.00 microF capacitor is positively charged while the bottom plate is negative. And for the 6.00 microF capacitor, the top plate is negatively charged and its bottom plate is positive. Also, current flows from the positive terminal of the battery to the negative terminal, so current flow in this circuit would be clockwise. Does the arrangement of the resistor between the two capacitors matter? Is the time constant only dependent on the capacitor that directly follows the resistor?