Rc(2&3) refers to the _____ containing R2 and R3.

• A. Series block
• B. Parallel block
• C. Voltage source
• D. Current path

Answer: (B)

When two resistors share the same two connection points, they are connected in parallel, meaning they sit across the same voltage. Rc(2&3) points to the resistor block that contains R2 and R3 arranged in parallel. In a parallel arrangement, the voltage across each resistor is the same while the current divides between the paths. If you needed the overall resistance, you’d use 1/R_eq = 1/R2 + 1/R3. The other options describe different things—a series block would have the same current through both resistors, a voltage source is a different circuit element, and a current path is simply the route current takes rather than a resistor network.