electric change and force

electric change and force

1. Combining Electric Force

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

2. Electric changer

   • Rubbing Objects together can charge them
   • Electric charge comes in two distinct types
     • Positive and negative charge
   • Atoms have positive, negative, and neutral particles
     • Electron
     • protons
     • neutrons
   • Electric charge is quantized
   • A coulomb is a large amount of charge
   • Electric charge can be transferred between objects
   • Not all materias are good conductors
     • Free dectrons
   • An Electric charge can attract a neutral objects
     • The polarization process
   • Charging by contact varies with the material
     • Charging by collesio
     • Turborictric charging

3. Electric Force

   • Coulomb´s law describes the electric force
   • Electric force acts along a line between the charges
   • Electric force is similar to gravitational force
     • Similarities and differences
     • Atomic System
     • Astronomical System
   • Electric forces keep most objects close to neutral