Question

The sum of all currents entering and exiting a node is sometimes zero.
a. True
b. False

Answer 1

TRUE

This observation about currents in a node is nicely captured in general form as Kirchhoff's Current Law, The sum of all currents flowing into a node is zero. The index n counts the branches attached to the node.

Answer 2

a. True.

According to Kirchhoff's Current Law (KCL), the sum of all currents entering and exiting a node (or junction) in an electrical circuit is always equal to zero. This is a fundamental principle in circuit analysis and is true for all nodes in a circuit, regardless of their location or complexity.