Lesson 6

4. a circuit in which the continuity is broken due to which the electric current can not flow.
6. an extremely small piece of matter with a negative electrical charge.
7. having a lower electric potential.
10. a type of elementary particle with a positive electrical charge.
11. a material or covering that electricity, heat, or sound cannot go through.
12. a device that gives energy to the charged particles constituting the current.
15. to join or be joined with something else.
16. flow of charged particles, such as electrons or ions, moving through an electrical conductor or space.
19. a force that acts to stop the progress of something or make it slower.
20. to give permission for someone to do something, or to not prevent something from happening.

1. any type of electrical or mechanical device that is capable of delivering an electrical charge.
2. having a higher electric potential.
3. to pull or draw someone or something towards them, by the qualities they have.
5. an electrical charge that collects on the surface of objects made from some types of material when they are rubbed.
8. a small device, usually pushed up or down with your finger, that controls and turns on or off an electric current.
9. to discover the facts or truth about something.
13. a substance that allows heat or electricity to go through it.
14. to force someone or something to stop moving towards you or attacking you.
17. a part of an electrical circuit designed to produce a particular amount of resistance to the flow of current.
18. the smallest unit of any chemical element.