electricity
closed
SOUrce
open
circuil

Answer:
1.Circuit
2.Electricity
3.Source
4.Closed
5.Open
Explanation:
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.
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.
The terms “open” and “closed” refer to switches as well as entire circuits. An open switch is one without continuity: current cannot flow through it. A closed switch is one that provides a direct (low resistance) path for current to flow through.