NODES, BRANCHES, LOOPS
NODE: point where two, or more, elements
are joined (e.g., big node 1)
LOOP: A closed path that never goes
twice over a node (e.g., the blue line)
BRANCH: Component connected between two
nodes (e.g., component R4)
The red path is NOT a loop
A NODE CONNECTS SEVERAL COMPONENTS.
BUT IT DOES NOT HOLD ANY CHARGE.
TOTAL CURRENT FLOWING INTO THE NODE
MUST BE EQUAL TO TOTAL CURRENT OUT
OF THE NODE
(A CONSERVATION OF CHARGE PRINCIPLE)