Answer:
An open circuit is one where the continuity has been broken by an interruption in the path for current to flow. A closed circuit is one that is complete, with good continuity throughout. A device designed to open or close a circuit under controlled conditions is called a switch.
In other words, a closed circuit has a complete path for current to flow, whereas an open circuit doesn't, which means that it's not functional. open circuit is a circuit which is not completed. Any circuit which is not complete is considered an open circuit.
Explanation:
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