Test your understanding with these interactive practice problems.
At a node, 3A and 5A are entering. How much current must leave the node to satisfy KCL?
In a node, 6A leaves, 2A leaves, and 4A enters. What is the net current sum at the node (by KCL convention: entering positive, leaving negative)?
At a node, three branch currents are: I1=2A into node, I2=3A out of node, I3=?
What must I3 be for KCL to hold?
A node has three currents: 4A entering, 1A leaving, and X leaving. Find X so that KCL is satisfied.