Electricity

Electricity

1. definition

   • Is the flow of charge.
     • It transfers energy

2. atoms

   • protons
   • neutrons: neutral
   • Electrons: charges
   • Total charge

3. Colombu's law

   • conductors
   • insulators
   • static electricity occurs when an object obtains an amount of charge

4. law of conservation

   • charges move from one place to another.
     • By contact (from one material to another
       • grouding
       • induction
       • polarization
       • ·opposite charges attract
         • ·like charges repel.
           • example
             • If a person qets plas or- charge , it makes the hair stand up
               • The charges in each hair push it away from the others

5. laws formulas

   • 1.colslomb's law:
     • F=K 9,92/r2
       • colomb's constant:
         • K=9X10
           • Nm2
             • C2