Charging

Charging

1. Objects have equal numbers of protons and electrons, so their net charge is zero; they do not exert or receive electric forces (charges cannot be created or destroyed

   • Objects can gain/lose electrons, so its net charge is no longer zero
   • Even if its net charge is zero, its electrons arrange around one end of the object
   • This phenomenon is called charging and can occur in 3 different ways
     • Friction
     • Induction
     • Conduction

2. Electrically charged object tend to become discharged.

   • When two objects with a different net charge interact, their electric charge tend to distribute uniformly via electrons, which move around the objects as a result of electric forces
     • Electric discharged objects are classified into:
       • Electro static discharge
         • Occur ocasionally and uncontrollably, power depends on the balance of charges
       • Electric currents
         • Continous discharge that occur in a controlled manner between materials called conductors

3. Materials are divided into

   • Conductors: Materials that allow electrons and electric current to flow freely
   • Insulators: Materials that do not allow electrons and electric current to move through them easiy