Static electricity

• Charge


  Property of matter that causes force when next to other charges or in an electric field
• Charge types

  • Positive
  • Negative
  • Neutral
• Everything has charge as they are made of positive and negative charge in equal amounts
• Charge SI unit

  Coulomb (C)
• Electric field


  Region where charges experience force
• The closer the charged objects

  The greater the field strength
• Charging an insulator


  By rubbing on to another object
• The only way to charge something is when it loses or gains electrons
• Charging a conductor by induction


  1. Metal ball becomes charged

  2. Charge distribution inside the metal ball changes

  3. Charge can be removed by adding a wire
• Charging a conductor positively

  Use a negative rod
• Charging a conductor negatively

  Use a positive rod