If I have a circuit where one branch contains a constant current source (e.g. 2A), does the current leading out of the current source equal the current leading into it (e.g. 4A) plus the current of the current source? That is, is the current leading out of the current source 2A+4A = 6A?
Or does the current source simply ensure that the current along the entire branch is equal to its value, e.g. if the constant current source was 2A the current along the entire branch would be 2A.
EDIT: Here is a diagram; I'm asking if \$I_A = I_B = 5A\$ or if \$I_B = I_A + 5A\$. Apologies for my poor MS paint skills