PPT-Chapter 15: Electric Charge, Forces, and Fields

Static Electricity Electrical charge that stays in one place Electric Charge a fundamental property of matter associated with the particles that make up the atom Electricity is the study of the interaction between electrically charged objects. 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. The electric force is one of the fundamental forces of nature. Controlled electricity is the cornerstone of our modern, technological society.. Chapter Goal: . To develop. a basic understanding of electric phenomena in terms of charges, forces, and fields.. Forces felt in . - and . -fields. Motion of particle in a . -field. Applications.  . Charges set up an . electric field . , in which other charges feel an . electric force. Currents (or magnets) set up a . . 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. Electric fields are created by . electric charges. . Any object with a charge has an electric field around it. Opposite charges attract each other; like charges repel. An electric field is a region in which a charge experiences a force. . Electrons on an insulator (zoomed in).. Zoomed out – difficult to “see” individual electrons . smooth distribution of charge..  Like charge is “smeared” on the insulator.  . - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -. Contents:. Basic Concept. Calculating electric Field example. Whiteboards. Point Charges. Examples. Whiteboards. Electric Fields in Charge Arrays. Force on mass Force on charge. g = Field strength E = Field strength. © 2014 Pearson Education, Inc.. Contents of Chapter 16. Static Electricity; Electric Charge and Its Conservation. Electric . Charge in the Atom. Insulators . and Conductors. Induced . Charge; the Electroscope. Chapter Summary 1. An electric field exists around any charged object. The field produces forces on other charged objects. . The electric field is the force per unit charge.. Creating and Measuring Electric Fields. 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. . Electric Potential (Energy). Charges. The fundamental rule at the base of all electrical phenomena is that . like charges repel and opposite charges attract. An object that has unequal numbers of electrons and protons is . 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. Defining the Electric Field. Michael Faraday suggested the idea of a force field to explain how the electric force can act at a distance.. An . electric field . is a property of the space around a charged object that exerts forces on other charged objects. .