1. Conductors/Insulators, and Field Lines
Static Electricity
Conductors/Insulators, and Field Lines

2. Electrostatics
Study of electric charges that can be collected and held in one place

3. Opposites Attract
I will call these positive and negative
Two like charges (positive/positive or negative/negative will repel)
Two unlike charges will attract

4. I found the electron! I am the master!!
Back to the Basics
Thomson and Rutherford discovered the electron and proton
When energy is added the electron can jump from their atom
When two neutral objects are rubbed together they will become charged (electrons move to one)
You wouldn’t be anything without my protons!

5. Conductor/ Insulators
Insulator- Charges cannot flow easily through it (rubber, plastic, glass, dry air)
Conductor- Allow charges to move easily through (metal) Think- How does the electroscope work?

6. Critical Thinking…
Originally it was proposed that electric charge is a type of fluid that flows from objects with an excess of the fluid to objects with a deficit. Why is the current two-charge model better than the single-fluid model?

7. Ways to Charge: Conduction- a charged object touches a neutral body
Induction-charges do not move to or from the material but go to separate sides- NO touching

8. A force?.. It’s Electric Boogie, woogie, woogie!
Can be attractive or repulsive
It is stronger when the charges are closer together

9. Coulomb’s Law F=Kqaqb/r2
Force is
Inversely related to the square of distance
Directly related to the charge
Unit of charge- C- the coulomb
K- constant 9x109

10. Think What would happen to the charge is The distance doubled
The distance halved
The charge doubled
The charge halved

11. Electric Fields Michael Faraday
If an electrically charged particle can create a force on another object , then it must be changing the change the space in between them! I will call this Electric Fields!
Michael Faraday

12. More Vectors!
The arrows represent strength of the charge and direction
The strength of the field is represented by the spacing between the lines
Always point away from positive
and towards negative

13. What a single field looks like
Who says science isn’t cool?!

14. More than one charge……

15. Draw in the missing field lines+ - +

16. Your Turn
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