Electric Charge

Electric Charge

1. Electric Charge

   • Electric Charge comes in two distinct types
     • Positive and Negative Charges
   • Charging by contact varies with the material
     • Turboelectric Charging
     • Charging by Collision
   • Not all materials are good conductors
     • Free Electrons
   • Electric Charge can be transferred between objects
   • Atoms have positive, negative, and neutral particles
     • Neutrons
     • Electrons
     • Protons
   • A Coulomb is a large amount of charge
   • Electric charge is quantized
   • Rubbing Objects together can charge them
   • An Electric Charge can attract neutral objects
     • The Polarization Process

2. Electric Force

   • Electric force is similar to gravitational force
     • Atomic systems
     • Astronomical systems
     • Similarities and Differences
   • Coulomb's Laws describes the electric force
   • Electric force acts along a line between the charges
   • Electric forces keep most objects close to neutral

3. Combining Electric Force

   • A spherical distribution of charge acts just like a point change
     • Surface Charge Density
   • Electric forces can be added graphically
   • Electric forces add by vector addition

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