PPT-Physics 2112 Unit 3: Electric Flux and Field Lines

Todays Concepts A Electric Flux B Field Lines Gauss Law Unit 3 Slide 1 Electric Field Lines Unit 3 Slide 2 Q Firsta comment What the point of all this flux stuff. Physics 2415 Lecture 2. Michael Fowler, UVa. The Electroscope. Charge detector invented by an English clergyman in 1787. Two very thin strips of gold leaf hang side by side from a conducting rod.. If a . Units of Chapter 16. Static Electricity; Electric Charge and Its Conservation. Electric Charge in the Atom. Insulators and Conductors. Induced Charge; the Electroscope. Coulomb’s Law. Solving Problems Involving Coulomb’s Law and Vectors. Vectors. &. Electric . Fields. Three Charges. Q=-3.5 . m. C. Q=+7.0. m. C. Q=+2.0. m. C. 6 m. 4 m. Calculate force on +2. m. C charge due to other two charges. Calculate force from +7. m. C . charge. has energy? Define electric potential ! !!by line-integrating electric field !!Closely related to energy !!Vector calculus connects electric potential to electric field and vice versa Derive differen Lecturer. I.B.T, . LUMHS. Electric flux . & . Electric flux Density. In electromagnetism, . electric flux.  is the rate of flow of the electric field through a given . area. .. The . total number of lines of force passing through the unit area of a . Electric Field . Estimates Derived . from . Magnetograms. .     . Brian T. Welsch. Space Sciences Lab, UC-Berkeley . Via Faraday's . law, sequences of . photospheric. vector . magnetograms. can be used to derive electric fields in the atmospheric layer imaged by the magnetograph. These electric field estimates have applications for space weather prediction: they determine the . 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. 1. When the balloon is rubbed on the sweater, what might happen?. A. . Some positive charges in the sweater will move onto the balloon. B. Some negative charges in the sweater will move onto the balloon. Rank. Responses. 1. 2. 3. 4. 5. 6. For a fixed electric field . E, . the flux . Φ. E. increases with cross . sectional area.. True. False. The signs of point charges q. 1. and q. 2. are:. q. 1. , q. -. -. -. -. -. -. -. -. d. q. -q. We investigate the dipole properties for various reasons:. -as an important example for the concept of superposition of electric fields. and the concept of field lines. 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. 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 . Charges are conserved. Charges are additive in nature. Charges are quantised.. PROPERTIES OF ELECTRIC CHARGES. PRODUCTION OF ELECTRIC CHARGE. We can get electric charge by three ways. By friction or rubbing. Franchetti. , GSI. CERN Accelerator – School. Budapest, 2-14 / 10 / 2016. 3/10/16. G. Franchetti. 1. Mathematics of EM. 3/10/16. G. Franchetti. 2. Fields are 3 dimensional vectors dependent of their spatial position .