Electricity

1
Electricity

• Electric Charge
• Static Electricity
• Conductors
• Insulators
• Electroscope

2
Electric Charge

• All matter has charge can be , - or neutral.
• Too many or too few electrons causes a net
  electric charge.
• If an electrical force causes electrons to move,
  electricity is produced.
• SI unit of electrical charge coulomb

3
Static Electricity

• Static Electricity
• the accumulation of electric charges on an object
• Electric Field
• the effect a charged object has on the space
  around it
• opposite charges attract like charges repel
• depends on strength of charges distance
  between charges

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Static Electricity

• Static Discharge
• When electrons move to balance the separation of
  built up charges

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Types of Static Electricity Charging

• By friction
• By contact
• By induction

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Charging by Induction
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Conductors

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

8
Insulators

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

9
Electroscope

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