Electric charge and static electricity fisica

Download Electric charge and static electricity fisica

Post on 11-May-2015

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  • 1.Priscila Larrauri & Luci Artigas Electric Charge and StaticElectricity

2. Electric Charge Def-A property that causes subatomicparticles such as protons and electrons toattract or repel each other. Electric charges move in a flash through alightning bolt. 3. Electric Charges Def-A net electric charge is produce by anexcess or shortage of electrons . ( C) Coulombs is the unit of electric charges-Quik Math Takes 6.24X1018 to produce a coulomb 4. Electric Forces Def-The force of attraction or repulsion between electrically charged objects. Charges repel, and opposite charges attract. 5. Electric Fields Def-The effect an electric charge has on othercharges in the space around it. The strength of an electric field depends othe amount of charge that produces the fieldand on the distance from the charge. 6. Static Electricity and Charging Def-The study of the behavior of electriccharges, including how charge is transferredbetween objects. Charge can be transferred by friction, bycontact, and by induction. Law of conservation charge- The total chargein an isolated system is constant. 7. Charging by friction Ex) Balloon pick up a net charge by rubbing ait on your hair Electrons move from hair to balloon becauseatoms in rubber have grater attraction forelectrons than atoms in hair. Because yourhair loses electrons 8. Charging by contact A Van de Graaff generator has charge themetal sphere. By touching it transfer thecharge that make the hair repel each otherbecause like charges repel She acquires a charge large enough to makeher hair stand. 9. Charing by intruduction Def- Transfer of charge with out contact betweenmaterials. If you come with a negative charge t thedoorknob it induces charges to move within themetal doorknob. 10. Static Discharge Occurs when a pathway through whichcharges can move forms suddenly It will not travel through air but it becomescharge when the gap between the objects issmall. Ex) Lighting storm the air is charge fromclouds to earth. 11. TopicMain IdeaElectric ChargeEelctric ForceElectric FieldStatic Electricity 12. http://www.youtube.com/watch?v=F6v8wm7_vdQ&feature=plcp http://www.youtube.com/watch?feature=endscreen&NR=1&v=VhWQ-r1LYXY

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