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What is electric current? The flow of electric current in wires, motors, etc. The motion of electrons or other charged particles 3. Carries energy & can do work 4. It carries a great deal of energy

How do electric circuits work? A complete path through which electricity travels. 6. Wires carry electric current like pipes carry water 7. Current can only travel in one direction

Open & Closed Circuits 8. Circuit with NO breaks 9. A circuit with any break in it causing the current to stop flowing.

Circuit diagrams 10. So, anyone familiar with electricity can build a circuit using the diagram

Symbols of Circuits 11.Wire Battery Bulb Resistor Switch

Resistors & Circuits 16. a device that uses energy carried by the current Ex: Light bulb, speaker, motor, etc 17. Opens and closes a circuit by making a “break”

Remember Potential Energy? 18. work done on the block becomes Gravitational Potential Energy. 19. Potential Energy becomes Kinetic Energy as it falls. 20. Most energy transfers to the box and ground when it lands.

What is Electrical Potential Energy? 21. If work is done upon a charge, it has Electrical Potential Energy.

22. It wants to move from high potential to low potential.

Gravitational and Electrical Potential Energy are measured in Joules What about the UNIT? Gravitational and Electrical Potential Energy are measured in Joules BUT…. 23. Electric Potential is measured in VOLTS (v).

Batteries 24. Use chemical energy to create a voltage (potential) difference 25. The current gives up energy (voltage) as it passes through the light bulb.

Batteries 26. The current returns to the battery so the charge can be pumped up to high potential