1. A deeper look into different types of circuits

2. What we’re now learning:
Circuit
Series
Parallel

3. Series Circuit
A series circuit has a single path for the current

4. Series Circuit There is only one path for the electrons to flow
This means the current must flow through all loads

5. Series Circuit
Example:
Christmas lights (old version)

6. Series Circuit
What is the problem with this type of circuit??

7. Parallel Circuit
A Parallel Circuit has multiple (at least 1) paths for the current to flow

8. Parallel Circuit
Charges can move through several different paths

9. Parallel Circuit
Example:
Household wiring

10. Parallel Circuit
What is good about this type of circuit?

11. Which is which??
What is example #1?
What is example #2?

12. Switch In a circuit, it is important to be able to turn it off and on.
A switch is a device that can open or close a circuit.
A switch can be used to turn on or off the circuit, in this example the light.

13. Switches If a switch is ON, the circuit is closed
IF the switch is OFF, the circuit is open

14. Switches
Is this switch ON or OFF??
Is the circuit OPEN or CLOSED?

15. Short Circuits
An electrical short circuit occurs when an electrical connection is made where one should not be
Caused when:
Wires touch when they shouldn’t
Water touches the circuit
The circuit overheats

16. Short Circuits Why this this bad??
Can result in damage to the components (light bulb, battery, etc)
Electrical shock or fire may occur

17. Short Circuits How can this be prevented? FUSES!
Fuses prevent unwanted short circuits
Fuses have metal links inside them that open when overheated
This stops the current from flowing