Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Class Notes 3/28/16 - Physics Internal Website
Document related concepts
Electric charge wikipedia , lookup
Eddy current wikipedia , lookup
Superconducting magnet wikipedia , lookup
Electromagnetism wikipedia , lookup
Hall effect wikipedia , lookup
Faraday paradox wikipedia , lookup
Superconductivity wikipedia , lookup
Electromotive force wikipedia , lookup
History of electromagnetic theory wikipedia , lookup
Electrical wiring wikipedia , lookup
History of electrochemistry wikipedia , lookup
Electromigration wikipedia , lookup
Electrical resistivity and conductivity wikipedia , lookup
National Electrical Code wikipedia , lookup
Electrostatics wikipedia , lookup
Alternating current wikipedia , lookup
Electrical injury wikipedia , lookup
Insulator (electricity) wikipedia , lookup
Lorentz force wikipedia , lookup
Electricity wikipedia , lookup
Skin effect wikipedia , lookup
Transcript
Physics 122 - Lecture Date: 3/28/16 Questions? Announcements/Reminders Written HW #08 – Sulutions are online, in older announcements. MP HW #09 – Due WEDNESDAY, 3/30, by 11:59 pm. Written HW #09 – Due WEDNESDAY, 3/30. Reading assignment (check website) – Due on 3/30/16. EXAM 2 – April 1 Cheat sheets ready for this week recitation! Last Class… * Dielectrics; Energy stored in capacitors; Capacitors in circuits; equivalent capacitance. … Connect capacitor to a source to charge it ... Clicker question In the conducting wire, electrons are moving in the direction from A to B. The electric field in the wire A) points in the A-to-B direction. B) points in the B-to-A direction. C) is zero, since electric field inside a conductor is zero. D) not enough information to tell. Clicker question In the conducting wire, electrons are moving in the direction from A to B. The electric field in the wire A) points in the A-to-B direction. B) points in the B-to-A direction. C) is zero, since electric field inside a conductor is zero. D) not enough information to tell. Current (Ch. 25) Example 1: Can a 2.2-mm-diameter copper wire have the same resistance as a tungsten tungsten wire of the same length? Give numerical details. Example 2: A length of wire is cut in half and the two lengths are wrapped together side by side to make a thicker wire. How does the resistance of this new combination compare to the resistance of the original wire?
