Static electricity builds up charge on objects but does not flow, storing potential energy. Current is the flow of electrons through a conductor, measured in amperes. There are two types of current: direct current flows one way while alternating current reverses direction. Circuits can be series, where all components are on one path, or parallel with multiple branching paths. Conductors easily transmit current while insulators do not. Resistance opposes current flow and is influenced by various material properties. Voltage measures the energy pushing current through a circuit. Ohm's Law defines the relationship between resistance, voltage and current. Electromagnets use current-carrying coils to generate magnetic fields, generators convert mechanical to electrical energy, and motors do the opposite

1. Current Electricity

2. Static ElectricityThe build up of an electric charge on the surface of an object.

3. The charge builds up but does not flow.

4. Static electricity is potential energy. It does not move. It is stored.Electricity that moves…Current: The flow of electrons from one place to another.

5. Measured in amperes (amps)

6. Kinetic energyThere are 2 types of currents:Direct Current (DC) – Where electrons flow in the same direction in a wire. There are 2 types of currents:Alternating Current (AC) – electrons flow in different directions in a wireThere are 2 types of circuits:Series Circuit: the components are lined up along one path. If the circuit is broken, all components turn off.Series Circuit

7. There are 2 types of circuits:Parallel Circuit – there are several branching paths to the components. If the circuit is broken at any one branch, only the components on that branch will turn off.Parallel Circuit

8. Conductors vs. InsulatorsConductors – material through which electric current flows easily.

9. Insulators – materials through which electric current cannot move.ExamplesConductors:

10. Metal

11. Water

12. Insulators:

13. Styrofoam

14. Rubber

15. Plastic

16. PaperWhat is Resistance?The opposition to the flow of an electric current, producing heat.

17. The greater the resistance, the less current gets through.

18. Good conductors have low resistance.

19. Measured in ohms.What Influences Resistance?Material of wire – aluminum and copper have low resistance

20. Thickness – the thicker the wire the lower the resistance