Following up this question: Thévenin equivalent: is this resistor useless?
I've now changed the voltage source to a resistor since this is a photoresistor. However I have no idea now how to represent the output voltage? How does it make sense to have a circuit without sources? I am supposed to have an output voltage in terms of illumination of the photoresistor. I need some kind of hint because I have no idea how to analyze this circuit.
I mean, if I did what I did before I would have: