Lecture_21(Chap.22) - Exam result Exam 2 result Multiple choice Mean Standard deviation 54.0 13.5 Hand graded 18.5 7.0 1 Gausss Law Properties of

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
xam 2 result Exam 2 result Multiple choice Hand graded Mean 54.0 18.5 Standard deviation 13.5 7.0 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Gauss’s Law: Properties of Metal Can we have excess charge inside a metal? Proof by contradiction: ˆ inside q 0 surface A n E =0 side q 0 0 inside 2
Background image of page 2
Gauss’s Law: Hole in a Metal ˆ inside q A n E 0 surface =0 0 0 inside q hat is electric field inside? What is electric field inside? 0 ACB V = 0 ADB VE d l  1. No charges on the surface of an 3 empty hole 2. E is zero inside a hole
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Gauss’s Law: Charges Inside a Hole ˆ inside q A n E 0 surface =0 +5nC 0 0 inside q 0 surface inside qq 5 nC surface q   4
Background image of page 4
Gauss’s Law: Screening ˆ inside q A n E 0 surface Is the field zero inside the box because the metal blocks the 5 field?
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Gauss’s Law: Circuits Can we have excess charge inside in steady state? i d 0 ˆ inside surface q A n E 6 __ ˆˆ left surface right surface E nA EnA    0 0 inside q
Background image of page 6
Gauss’s Law: Junction Between two Wires i 1 =i 2 u n u n 2 <n 1 u 2 <u 1 n 1 Au 1 E 1 = n 2 Au 2 E 2 11 1 1 nu E EE 21 22 ˆ inside q 0 surface A n E ) 0 E A E A 01 2 () inside qE 7 There is negative charge along the interface!
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Problem 21.P.23 A solid chunk of metal carries a net positive charge and also is polarized by other charges that are not on the metal. The electric field very near
Background image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/23/2011 for the course PHYS 272h taught by Professor Staff during the Spring '08 term at Purdue University-West Lafayette.

Page1 / 20

Lecture_21(Chap.22) - Exam result Exam 2 result Multiple choice Mean Standard deviation 54.0 13.5 Hand graded 18.5 7.0 1 Gausss Law Properties of

This preview shows document pages 1 - 9. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online