Final answer:
Kirchhoff's rules can be used to determine node voltages in a circuit by generating a set of linear equations. The number of nodes in the circuit depends on the circuit itself and each current should be included in a node and a junction equation.
Step-by-step explanation:
A method for determining node voltages in a circuit is by applying Kirchhoff's rules. Kirchhoff's rules generate a set of linear equations that can be solved to find the unknown values in the circuit. The number of nodes in the circuit depends on the circuit itself, and each current should be included in a node and in at least one junction equation.