2018-09-192018-09-192018http://hdl.handle.net/20.500.12091/266This skill is an introduction to basic circuit theory. First, you must understand that electricity only flows in a closed circuit. A closed circuit is a loop of materials that will conduct electricity. An open circuit is a loop that will not conduct electricity. A continuity tester helps to determine if a circuit is closed or open. Testing circuits is an essential skill for troubleshooting. A functioning continuity tester indicates continuity, sometimes called connectivity. The LED on the continuity tester will light when the test leads are connected to two points that are connected electrically. The LED will not light if the two points are not connected electrically.en-USElectrical ConnectionsBTA SkillsBTA SkillsArticle