PPT-Phys 102 – Lecture 4 Electric potential energy & work

1 Today we will Learn about the electric potential energy Relate it to work Ex charge in uniform electric field point charges Apply these concepts Ex electron microscope assembly of point charges dipole . Physics 2102. Gabriela Gonz. á. lez. Physics 2102 . Electric potential energy, . electric potential. Electric potential energy. of a system = . = . -. work (against electrostatic forces) needed to needed to build the system . Introduction to Physics II. . Class 11 – . Outline:. Electric Potential Energy of: . Point . Charges. Dipoles. Electric . Potential: . V. Voltage: . Δ. V. Class . 11 . Preclass. Quiz on . MasteringPhysics. Objective: TSW understand, transfer and apply energy concepts to electric fields and charges by solving problems involving electric fields and forces.. Let’s revisit energy concepts for a gravitational field. A 250 gram baseball is thrown upward with an initial velocity of 25m/s. What is the maximum height reached by the ball?. Electric Energy. and. Capacitance. Clicker I. Three equal positive charges are placed on the x-axis, one at the origin, one at x = 2 m, and the third at x = 4 m. Of the following points, which has the greatest magnitude electric field? . Physics 2102. Gabriela Gonz. á. lez. Physics 2102 . Electric Potential on Perpendicular Bisector of Dipole. You bring a charge of -3C from infinity to a point P on the perpendicular bisector of a dipole as shown.. Introduction to Physics II. . Class 11 – . Outline:. Finishing Chapter 26 on dipoles... Electric . Potential Energy of: . Point . Charges. Dipoles. Electric . Potential: . V. Voltage: . Δ. V. Which dipole experiences no net force in the electric field? . A.S. 5.1.1 – 5.1.4 due Monday. Reading reference: chapter 16. Question 16.1a. . Electric Potential Energy I . a). . proton. b). . electron. c). . both feel the same force. d) neither – there is no force. PHYS 1444-004, Spring 2012 Dr. Jaehoon Yu. 1. PHYS 1444 – Section . 004. Lecture . #6. Monday. ,. Feb. 6, 2012. Dr.. . Alden . Stradling. Chapter 23 Electric Potential. Electric Potential Energy. Physics 2415 Lecture 6. Michael Fowler, UVa. Today’s Topics. Some reminders about gravity: . mgh. and its electric cousin. Inverse square law and its potential. Field lines and . equipotentials. What is . electric . potential?. How does it relate to . potential energy. ?. How . does it relate to . electric field. ?. Some simple applications. Electric potential. What does it mean when it says “1.5 Volts” on the battery?. . Class 11 – . Outline:. Finishing Chapter 26 on dipoles... Electric . Potential Energy of: . Point . Charges. Dipoles. Electric . Potential: . V. Voltage: . Δ. V. Which dipole experiences no net force in the electric field? . Gabriela Gonz. á. lez. Physics 2102 . Electric potential energy, . electric potential. Electric potential energy. of a system = . = . -. work (against electrostatic forces) needed to needed to build the system . . 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 . Homework III: MP23.4, MP23.12, MP23.19, MP23.34, MP23.38, MP23.62 and Hand-in (HI) 23.41, 23.59, 23.64 . Today: One final Gauss’ Law example, then start on electric potential.. 2. Example Problem. 3.