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Electricity In this wiki the topic that will be covered is Electricity. Under the topic of electricity there are three other sub topics that will be covered : Static Electricity, Electric Circuits, and Parallel and Series Circuits. This wiki is meant to help everyone that uses it become more confident with the topics that are covered and be able to learn in an easier ways. The topics will be talked about and explained in easy understandable ways and hopefully make the learning experience less stressful and easier to understand everything. Enjoy !!!

Favorite Links: http://www.ndt-ed.org/EducationResources/HighSchool/Electricity/electriccharge.htm http://science.howstuffworks.com/transport/engines-equipment/vdg1.htm http://www.allaboutcircuits.com/vol_1/chpt_5/1.html

Group-mate Links :

http://www.school-for-champions.com/science/static.htm http://www.physicsclassroom.com/class/circuits/u9l2c.cfm http://physics.bu.edu/py106/notes/Circuits.html

PDF File: http://groups.physics.northwestern.edu/lab/DOWNLOAD/electrostatics.pdf







Unit 1: Static Electricity -Electrostatics involves electric charges, the forces between them and their behavior to materials -Static electricity is not flowing -Electrostatics is energy at rest -Electrostatics is about atoms and parts that make up atoms -Positive Charges : Protons -Negative Charges: Electrons -Neutral Charges: Neutrons -Like charges repel -Opposite charges attract -All atoms are neutral by nature if one electron is removed an ion is produced -Newtons law: F= GM1M2/D2 -Coulombs law= F=Kq1q2/D2 -K=9,000,000,000 nm2/c2 -If an object allows electrons to flow from one place to another it is said to be a conductor. If material does not then it is an insulator - 3 ways to charge objects: Friction, Contact, Induction

Unit 2: Electric Current - Electrons in motion -Current: the number of electrons that pass a specific point in a circut in one second - Current = Charge / Time -Circut: Electric current flows through a closed continuous path -The reason electric charge flows from one place to another is voltage -Voltage is the difference in electrical potential between two places where electrons are flowing -Voltage is the push that makes electric charges move - Measured in Volts(V) -Batteries are electron pumps - They provide a voltage difference to a circut -Types : wet cell and dry cell batteries -Two types of dry cells: thermocouples which are a tool that uses differences in temperature to generate electric currents. and a generator which makes alternating current -Direct Current" flow in the same direction -Alternating Current: Flow in a different directions, from generators, used in their homes, transforming AC to DC  -Current: measured in amps  -Voltage: measured in volts  - Higher Voltage the more work the electrons can do  - Resistance the force opposing the flow of electrons  - Measured in Ohms  -Symbol is the greek symbol Omega  -Thicker Wire: less resistance  -Longer Wire: more resistance  -Conductor: Low resistance  -Insulators: Higher resistance  -Ohms Law: Current in a circut is equal to the voltage divided by the resistance  -Power:toc

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