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

3. The charge builds up but does not flow.

5. Measured in amperes (amps)

10. Metal

11. Water

12. Insulators:

13. Styrofoam

14. Rubber

15. Plastic

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

18. Good conductors have low resistance.

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

21. Length – shorter wire has lower resistance

24. Amps measure how much water comes out of a hose.

26. Practice with Ohm’s Law