The Norton equivalent

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.

Symbols again. Put in $I_N = 1.2$ mA and $R_N = 5$ k, add the same 1 k load, and it reads 1 V — the same load, the same answer, as the Thevenin form with 6 V and 5 k.