This is the circuit from the lecture, running. Change it and
the answer changes with it:
- Click any component value to edit it, or drag components to rearrange.
- The wrench opens a step-by-step analysis — it
chooses a reference node and writes the node equations. Leave its
Domain on the DC operating point for this deck.
- The crosshairs probe reads a node voltage or a branch current, so you can
check any intermediate result rather than only the final answer.
Probe the current in the 2 k: zero. That is why $V_{oc}$ is just the voltage across the 6 k shunt, with no divider to work out.