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Static Electricity

Static electricity occurs when uncharged objects gain or lose electrons, resulting in positive or negative charges. Charges can build up on objects but do not flow continuously. There are three primary methods for transferring charges: friction (rubbing two uncharged objects together), conduction (touching a charged object to an uncharged one), and induction (electron movement caused by an electric field). Static discharge occurs when electricity transfers from one object to another, often producing sparks, as seen in lightning. Electroscopes can detect these charges effectively.

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Static Electricity

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  1. Static Electricity • Most objects have no overall charge and are neutral. • Uncharged objects become charged by gaining or losing electrons. • Loses electrons it has more protons OR (+) charges and has an overall POSITIVE (+) charge • Gains electrons it has more electrons OR (-) charges and has an overall NEGATIVE (-)charge • THE BUILDUP OF CHARGES IS CALLED • STATIC ELECTRICITY

  2. Static Electricity • Charges build up on an object, but they do not flow continuously.

  3. Transferring Charge • There are three methods by which charges can be transferred to build up static electricity: charging by friction, by conduction, and by induction.

  4. TRANSFERRING CHARGES • Friction: 2 uncharged objects rub together, some electrons move from one object to another • Conduction: a charged object touches another object, electrons can be transferred • (more negative to more positive) • Induction: movement of electrons to one part of an object that is caused by the electric field of a second object

  5. Transferring Charge • Electroscopes are instruments that can be used to detect the presence of a charge.

  6. Static Discharge: The loss of static electricity as electric charges transfer from one object to another is called STATIC DISCHARGEproduces a spark because the moving electrons heat the airLIGHTNING is an example of Static discharge.

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