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Electricity
The Shocking History of Electricity ,[object Object],[object Object]
What is Electricity? ,[object Object],[object Object],[object Object]
Electric Charge ,[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object]
Electrical Conductors and Insulators ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Electrostatic Charge ,[object Object],[object Object],[object Object],[object Object]
Charging by Friction ,[object Object],[object Object],[object Object]
Charging by Induction ,[object Object],[object Object],[object Object],[object Object]
Beware of Door Knobs That Bite More apt to happen in dry weather…why? In dry weather, air acts and an insulator and an electric charge can build up your body.  When your hand gets close enough to the door, the charge is conducted (discharged) from your hand to the knob.  Humid air does not allow a large charge to build.  The electricity is discharged into the air because water (humidity) is a good conductor.
Electric Force Fields ,[object Object],[object Object],[object Object],[object Object],[object Object]
Electrical Circuits ,[object Object],[object Object],[object Object],[object Object],[object Object]
Electrical Circuits Note: It is the electron field, and not the electrons, which does the work. The field that accelerates the electrons that are already in the conducting material.
The Water Pressure Model ,[object Object],[object Object],[object Object],[object Object]
Electric Current ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
The Water Pressure Model - Current ,[object Object],[object Object]
Electric Current ,[object Object],[object Object],[object Object],[object Object]
Electric Current ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object]
Potential Difference (Voltage) ,[object Object],[object Object],[object Object]
Potential Difference (Voltage) ,[object Object],[object Object],[object Object],[object Object]
Example of Potential Difference ,[object Object],[object Object],+ + + + + + + + + + + + + +  - - - - - - - - - - - - - - - - - - -  e- PUSH
The Water Pressure Model - Voltage ,[object Object],[object Object]
Outlet ,[object Object],[object Object]
Batteries ,[object Object],[object Object],[object Object],[object Object]
The Battery ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Primary vs. Secondary Cells ,[object Object],[object Object],[object Object],[object Object]
Dry Cell Battery (Primary Cell) ,[object Object],[object Object],[object Object]
The Lead Acid Battery  (Secondary Cell) ,[object Object],[object Object],[object Object],[object Object]
Hydrogen Fuel Cells ,[object Object],[object Object],[object Object],[object Object]
Hydrogen Fuel Cells
Hydrogen Fuel Cells ,[object Object],[object Object],[object Object],[object Object]
Electrical Resistance ,[object Object],[object Object],[object Object],[object Object]
Electrical Resistance ,[object Object],[object Object]
The Water Pressure Model - Resistance Work being done
Electrical Resistance of a Wire ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
The Water Pressure Model - Resistance More Resistance More Resistance
Superconductors ,[object Object],[object Object]
Ohm’s Law ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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Electricity

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  • 10. Beware of Door Knobs That Bite More apt to happen in dry weather…why? In dry weather, air acts and an insulator and an electric charge can build up your body. When your hand gets close enough to the door, the charge is conducted (discharged) from your hand to the knob. Humid air does not allow a large charge to build. The electricity is discharged into the air because water (humidity) is a good conductor.
  • 11.
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  • 13. Electrical Circuits Note: It is the electron field, and not the electrons, which does the work. The field that accelerates the electrons that are already in the conducting material.
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  • 35. The Water Pressure Model - Resistance Work being done
  • 36.
  • 37. The Water Pressure Model - Resistance More Resistance More Resistance
  • 38.
  • 39.