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Static Electricity and Discharges

Static Electricity and Discharges. Page 457. What is ESD: Electrostatic discharge – the rapid transfer of charge (electrons) between two objects. Examples: Lightning striking the CN tower Van de Graff generator Spark when touching a door knob

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Static Electricity and Discharges

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  1. Static Electricity and Discharges

  2. Page 457 What is ESD: • Electrostatic discharge – the rapid transfer of charge (electrons) between two objects. Examples: • Lightning striking the CN tower • Van de Graff generator • Spark when touching a door knob • Crackling noise when pulling cloths out of dryer

  3. Static Electricity Static electricity: • Is an imbalance of electric charge on the surface of an object. • “Static” means not moving. • This form of electricity is called static because the charges stay in one place until they move suddenly from one object to another

  4. A Van de Graff generator builds up electrons. • When you place you hand on it these electrons transfer onto you. • Because all electrons are negative, these charges will repel each other. • This causes you hair to separate as the negative charges get as far away as possible.

  5. Electric Discharge • An electric discharge is the rapid transfer of electrons from one object to another. • When you rub your socks across a carpet, electrons from the carpet may move onto you. • When you the touch a metal doorknob, the electrons can move from you to the doorknob (shock!)

  6. Lightening • A lightening bolt is causes by the difference in charge between a cloud and the ground. • During a storm the swirling winds cause positive charges to build up on the top of the cloud and negative charges on the bottom.

  7. The ground below the could develops a positive charge. • When the difference between the cloud and the earth is strong enough, a path forms causing a surge of electrons we see a lightening bolt.

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