1. Aim:
What are Circuits

2. Direct Current vs. Alternating Current
Vocabulary:
Series circuit
Parallel Circuit
Load
Power Source
Open vs. Closed Circuit
Direct Current vs. Alternating Current

3. A simple circuit :
The most basic circuit. Consists of a power source and a load (something to use the current).
battery = power source
light = bulb (load)
wire =connecting them.

4. Load
Power Source ?

5. Open Circuit
In order for electricity to flow, there must be a continuous path between the negative "pole" and the positive pole of the power source.
A broken wire or an "open" (off) switch leaves gaps in a circuit preventing electrons from traveling from one side of the power source to the other.
This situation is called an open circuit.

6. .
A closed switch means that the circuit is connected.

7. Open or Closed

8. Open or Closed

9. Open or Closed

10. Open or Closed

11. Open or Closed

12. Open or Closed

13. Types of Circuits
Simple
Series
Parallel
Combonation

14. Simple Circuit
Electrons from the negative end to the positive end

15. A series circuit: When your circuit includes a few loads and you choose to connect them all up in a continuous row so current goes through one, then the other, and then another …

16. Series Circuit

17. A parallel circuit When the circuit is wired so that the current can flow through the load without having to flow through all the other loads in the circuit. The loads run parallel to each other.

18. A series and parallel circuit
We are not going to spend that much time on it.

19. Series or Parallel

20. Series or Parallel

21. Series or Parallel

22. Series or Parallel

23. Open or Closed

24. Which one had electricity flowing?

25. Two Types of Current Direct Current: batteries, simple circuits
Produce heat DC
Alternating Current:
your house, generators
Produce a lot less heat AC

26. Direct Current

27. Indirect Current

28. Lab: Series vs. Parallel