Homework Equations; 3. The Attempt at a Solution [/B]
Here is my thought process and assumptions.
Without Vs1 and R2, the open-circuit current would be Vs2/R2, but I know Vs1 and R1 must be contributing in some way. I'm thinking of summing the Voltage sources and using the Potential divider to find Vopen-circuit. Can I do that?
I also assume we are calculating the open-circuit current and voltage after transforming into the Thevenin equivalent, not before (is this correct?), even though we are taking the circuit separately and an open-circuit is formed.
I know the time constant = RC, since after the Thevenin equivalent, we have RC circuit, driven by VThevenin.