What is another word for closed circuit?
Pronunciation: [klˈə͡ʊzd sˈɜːkɪt] (IPA) 
A closed circuit refers to an electrical circuit where the current flows through a loop, and the circuit doesn't connect to any external devices. There are several synonyms for closed circuits, including loop circuit, feedback circuit, and ring circuit. A loop circuit is an electrical circuit in which the current flows through a continuous loop, with no branching. A feedback circuit is a circuit that uses the output of the circuit to control the input, and the ring circuit is a type of loop circuit where the output is fed back to the input. Other synonyms for closed circuits include circular circuit, ring main, and closed loop. All these synonyms refer to a complete circuit that doesn't connect to external devices.
