PPT-Electric Fields of Charge Distribution

Electrons on an insulator zoomed in Zoomed out difficult to see individual electrons smooth distribution of charge Like charge is smeared on the insulator   . 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 Origin of Electricity. The electrical nature of matter comes from atomic structure. Nucleus. – . made up of . protons. and . neutrons. Most of the mass of the atom is contained in the nucleus. 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. . 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. By: Raiden Foris. The attractive or repulsive interaction between any two charged objects is an . electric force. . . video. What is electric force?. Coulomb’s law. The symbol . k. is a proportionality constant known as the Coulomb's law constant. The value of this constant is dependent upon the medium that the charged objects are immersed in. In the case of air, the value is approximately 9.0 x 10^9 N • m^2 / C^2. . 3.1 . Electric Charges, Fields, and Potentials . 3.2 . Capacitance . 3.2.1 . Capacitor . 3.2.2 . Dielectric Constant . 3.3 Magnetism . 3.3.1 . Faraday’s . Law. 3.3.2 Solenoid. 3.3.3 . Toroid. 3.3.4 Permanent . Gauss. ’ law. Physics 2102. Gabriela Gonz. á. lez. Carl Friedrich Gauss . 1777-1855. Q. r. l. =Q/L. r. l. =Q/2R. q. q. r. = R. q. l. =Q/2. p. R. r. q. r. s. . =Q/. p. R. 2. Electric field lines and forces. Kevin Ralphs. Overview. General Exam Strategies. Concepts. Practice Problems. General Exam Strategies. Don’t panic!!!. If you are stuck, move on to a different problem to build confidence and momentum. 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. .