Ch. 21 - Electricity

1
Ch. 21 - Electricity

• I. Electric Charge (p.592-597)
• Static Electricity
• Conductors
• Insulators
• Electroscope

2
A. Static Electricity

• Static Electricity
• the net accumulation of electric charges on an
  object
• Electric Field
• force exerted by an e- on anything that has an
  electric charge
• opposite charges attract
• like charges repel

3
A. Static Electricity

• Static Discharge
• the movement of electrons to relieve a separation
  in charge
• Grounding
• Dissipation of charge to an object of excess
  charge

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B. Conductors

• Conductor
• material that allows electrons to move through it
  easily
• e- are loosely held
• ex metals like copper and silver

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C. Insulators

• Insulator
• material that doesnt allow electrons to move
  through it easily
• e- are tightly held
• ex plastic, wood, rubber, glass

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D. Electroscope

• Electroscope
• instrument that detects the presence of
  electrical charges
• leaves separate when they gain either a or -
  charge

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E. Charge Transfer

• Conduction
• The transfer of charge through direct contact
• Induction
• The movement and buildup of charge without direct
  contact