PPT-DETECTING ELECTRIC CHARGE

KEY TERMS Electroscope Induced charge separation Grounding Induction Learning Goals To understand how to tell if a metal leaf electroscope is charged To learn what is meant by the term induced charge separation. Balloon and Scotch Tape Electroscope Lab. Balloon Lab. Big Idea. : There exist electrical charges which can repel/attract one another.. Up and atom!. An atom is the smallest unit of a particular element.. Physics 2415 Lecture 3. Michael Fowler, UVa. Today’s Topics. Continuous charge distributions: line of charge. Visualizing the field: lines of force. Electron moving in a field. Electric dipoles. Superposition. A. little. chemistry. . . . All. . matter. . . . Atoms. . are. is m. a. de. . up. . of ato. m. s. made. . of. . pr. o. ton. s. ,. n. e. utr. o. ns,. . a. n. d. . ele. c. tro. n. s. . . HW2:Chapter 21, Pb.1, Pb.12, Pb.13, Pb.25, . Pb.31, . Pb.36,Due Wednesday, Jan.25. 21.1 Electric Charge, q or Q. Charge comes in two types. 1e = 1.6x10. -19. Coulombs (unit of charge) fundamental unit of charge. CHISA 2016, Prague (Czech Republic). Dept. . of Electronics and Electromagnetism, Faculty of Physics, University of Seville, Spain.. . Project leader (PH.D. director): M.A.S. Quintanilla.. IFPRI Ph.D. student: J. Pérez-Vaquero.. A . positive charge . might . be placed at one . of . three . spots in a . region where there . is a uniform . electric field. . . How does the electric potential energy, . U. elec. , on the charge . . 21-6 The . Electric . Field. Gravitational . Field. +. -e. Electric Field. +. +. +. Units . N/C. 21-6 Electric Field. https://. www.youtube.com/watch?v=xg0Lg-uSMSQ. 21-6 Electric Field: point charge. Concepts to Learn Today. Which charges attract and repel each other. Everything is electric!. Charges can be separated between two objects. Charge is always conserved. From the sticky tape investigation, we can conclude that there are two different . Electrons on an insulator (zoomed in).. Zoomed out – difficult to “see” individual electrons . smooth distribution of charge..  Like charge is “smeared” on the insulator.  . - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -. Chapter 21. © 2016 Pearson Education Inc.. Learning Goals for Chapter 21. Looking forward at …. how objects become electrically charged, and how we know that electric charge is conserved.. how to use Coulomb’s law to calculate the electric force between charges.. 18.1 . The Origin of Electricity. The electrical nature of matter is inherent. in atomic structure.. coulombs. 18.1 . The Origin of Electricity. In nature, atoms are normally. found with equal numbers of protons. Static Electricity. Static Electricity-. accumulation of excess electric charges on an obj. pg. 194. Protons = + electrical charge. Electrons= - electrical charge . Example of electron transfer: . Michael Fowler, UVa. Today’s Topics. Continuous charge distributions: line of charge. Visualizing the field: lines of force. Electron moving in a field. Electric dipoles. Superposition. The . total electric force . Physicists have identified four fundamental forces that account for the account all phenomena in the universe. .* . Force. Strength. Distance of action. Description. Strong nuclear. Very. strong!. Very, very Short.