And we still have the capacitor, but again,

the capacitor's in steady state in a DC circuit and it acts as an open circuit.

So this is our Vc at t is equal to infinity.

We have R2, we have R1, and we know that we're not going to have any current

flow from the 10 volt source to the right-hand side of our circuit,

because of our switch that's been opened.

So there's no current flowing in this circuit or

in this loop either at t is equal to infinity.

At this point, the capacitor is completely discharged.

Originally had 10 volts times R1 divided by R1 plus R2 across the capacitor.

After we open the switch, all that voltage is discharged across

R2 until eventually the voltage across the capacitor

reduces to 0, because there's no sources over here to keep the capacitor charged.