What type of circuit configuration involves all components connected to a single node?

The circuit configuration described, where all components are connected to a single node, is known as a Y-connected (or star-connected) configuration. In a Y-connection, each component (such as resistors or other circuit elements) is directly connected to a common central point, or node, providing a distinct path for current to flow to each component from this single point.

This configuration allows for easy addition or removal of components without significantly disrupting the rest of the circuit. It effectively provides more direct access to each element, which can be particularly advantageous in terms of analysis and troubleshooting, as changes in one branch may not directly affect the others.

In contrast, series configurations involve components connected end-to-end, so there isn't a common node connecting them all. In a parallel configuration, components are connected so that they share two common nodes, leading to multiple paths for current. Delta-connected configurations involve a closed loop where three components are interconnected in a triangular layout, which does not align with the idea of a single central node where all components connect.