WILL MARK BRAINLIEST please and thank you 6. What is a cell?
7. What is a battery?
8. How do open and closed circuits differ?
9. What is the purpose of a switch?
10. Which type of current involves electrons moving in only one direction?
11. Which type of current involves electrons moving back and forth?
12. Which type of current is transferred in power lines?

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Explanation:

6. A cell is an "electrical power supply".

7. A battery is a device that stores chemical energy and converts it to electrical energy.

8. 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.

9. An electrical switch serves the purpose of controlling the flow of electrical current within a circuit.

10. Direct Current

11. Alternating Current

12. Alternating Current

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.