In solving combination circuits, tracing currents to identify series and parallel elements is ____.

• A. False
• B. Sometimes
• C. Cannot be determined
• D. True

Answer: (D)

Tracing the current path is a practical way to spot series and parallel relationships in a circuit. When current flows through components in a loop without branching, those elements are in series because the same current passes through each one. When current reaches a node and splits into different paths, those branches are in parallel because they share the same voltage across them. By following how the current moves, you can progressively simplify the network: combine resistors in series by adding them, and combine resistors in parallel by using the reciprocal rule, then redraw and continue until you reach a single equivalent. This approach works well for many combination circuits that have clear series/parallel groupings, though some circuits require other analysis methods.