What is the act of connecting two circuits so that current can flow through both known as?

The act of connecting two circuits so that current can flow through both is referred to as paralleling. In electrical terminology, when circuits are connected in parallel, they share the same voltage across their terminals while allowing for multiple paths for current to flow. This configuration can enhance the overall current capacity of the system, as each parallel circuit can carry a portion of the total current, effectively distributing the load.

Paralleling is commonly used in systems where redundancy and reliability are important, as it allows one circuit to operate should another fail, ensuring continuous operation. This concept is pivotal in power distribution and generation applications, as it optimizes performance and increases throughput.

In contrast, linking, combining, and coupling often refer to different types of connections or configurations that may not specifically involve the principles of current flow within parallel circuits. For example, linking might not necessarily ensure that current flows through both circuits, and combining may imply merging rather than maintaining distinct paths. Coupling could refer to various forms of connection, including mechanical or signal coupling, without implying electrical characteristics that define parallel connections.