• electric charge
  • pos and neg
  • pos == proton
  • neg == electron
  • Proton mas >>>> electron
  • Proton charge == electron
  • neutron no charge > proton
• Electrical Forces
  • 
• Conservation of Charge
  • Neutral means equal protons and electrons
  • If inequal, not neutral
  • charged atom is called ion
  • charge not destroyed, it is transferred/changed
• Coulomb's Law
  • The electrical force decreases inversly to distance
  • Like gravity
• Conductors
  • Like heat
  • conductor of electrical current
  • same reason for good heat
  • if electrons aren't free, its bad
  • 1-2 valence electrons
• Insulator
  • Electrons aren;t free
  • doesn't conduct current well
  • 5-6 valence electrons
• SemiConductors
  • depends of temperature
  • silicon is neither
  • can be made to behave as either
• Charging
  • Friction
    • causes heat and frees electrons
    • easier current and loose electrons
    • Balloon example
  • Contact
    • Charges transfer until equilibrium
    • very positive/negative can take away electrons/protons
    • Touching doorknob
  • Induction
    • repelling other type of electron can sort and charge
    • 
    • neutral => charged
• Electric Field
  • Like grav force
  • Mass is charge instead
  • like a grav field, it is in space
  • Pos charge
    • Goes outward
  • Neg charge
    • Inward
  • Coulombs
    • STrength
  • Example
    • 
• Electric Potential
  • Like pulling 2 magnets apart
  • same way for Grav PE