The output node current split closes by exact KCL for every load row. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.
highlighted = computed this step
The output node is a current-sum checkpoint
At the loaded output node, source current splits into bottom current and load current. The helper checks that split before the diagram is rendered.
Is=Ib+IL
Every row closes the node current sum
The source current column equals the bottom-branch current plus the load-branch current in each row.
Ib1A54A32AIL1A58A2AIs2A512A38A
The first row splits two amperes into one plus one
For the rendered row, the source current is 2 amperes, and the two outgoing branch currents are each 1 ampere.