Electricity

• Static Electricity


  • Does not move
  • When two object rub against each other, friction is created, causing electrons to transfer from one object to another
  • Example of static electricity:

  Walked on carpet the and touched a doorknob

  Rubbed balloon on your hair

  Had your t-shirt stick to your sweater

  • When an object has more electrons (is negatively charged) we say it has built up a static charge
  • Static electricity doesn't flow like in a circuit, but it can be discharged (because of the law of electricity)
• Law of electricity

  1. Opposite charges attract each other
  2. Like charges repel each other
• Current Electricity

  • Does move
  • is the flow of electrons from one section of the circuit to another
  • The rate the electric currents flow is measured in amperes
  • How much electrical energy each charged particle carries is measured in voltage
• Ions: atoms that have gained or lost electrons, so they have a different number of electrons than the atom has protons and become charged
• Cations: An ion that has lost electrons to become positively charged
• Anions: An ion that has gained electrons to become negatively charged
• Amperage

  • Unit: Amps (A)
  • Definition: The rate the electric current flows
• Voltage

  • Unit: Volts (V)
  • Definition: how much electrical energy each charged particle carries