lec01_ddn (1) - PHYS 221 General Physics Electricity Light...

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PHYS 221 General Physics: Electricity, Light and Modern Physics Physics Department Home page: http://www.physics.purdue.edu/ Course Home page: http://www.physics.purdue.edu/phys221/ CHIP Home page: http://chip.physics.purdue.edu/public/221/fall2011/ Room 144- Undergraduate office Room 11- Help center http://www.physics.purdue.edu/class/services/HC219221.pdf Room 290- Physics Library *Register I-clickers by Wednesday on CHIP
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Lecture 1 Electric Charges & Coulomb’s Law www.ehow.com/how_2180464_ reduce- static-cling.html http://www.diyhappy.com/wp- content/images/Lightning.bmp Electric Charge Electric charge is an intrinsic characteristic of the fundamental particles that make up objects. + Positive Charge Negative Charge ! Electrically neutral: object contains equal amounts of positive and negative charges ! Net charge: imbalance in charge Electric Charge Net charge of a system: algebraic sum of all the charges Law: Conservation of charge The net charge of a closed system never changes
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Electric Charge Electric charge is quantized
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