1. Electricity Day 2

2. Conductors A conductor allows charges to flow easily Some conductors are better than others Examples: Copper Iron

3. Insulators An insulator prevents electric charges from flowing easily Examples: RubberCork WoodPlastic

4. Current Electricity Current electricity is the flow of electrons through a conductor There are two types of electric current: Alternating Current Direct Current

5. Alternating Current Changes direction at a regular rate Most commonly used type of electricity because it does not create as much heat Examples: Appliances Houses Christmas lights

6. Direct Current Always flows in one direction Always flows from negative to positive Creates a lot of heat Example: Battery

7. What is a Battery? A series of electrochemical cells Two types: A wet cell Example: Car battery A dry cell Example: AA battery

8. What is a circuit? The path an electric current follows Consists of four parts: SourceLoad WiresSwitch Current flows only through a closed circuit

9. Symbols Source /battery Resistance Lamp/load Motor/load WireSwitch/open