/**
* 1/19/05 (A. Gonzalez) Chapter No., Book No. and Title Added
* 6/20/05 Modified: (J. Lucca) Removed frames from quizzes.
* 7/7/05 Modified: (J. Lucca)
* Can turn off HISTOGRAM and randomize_questions on any ch##.htm page
* by setting them here to false. Both default to true in quiz.js.
* 12/1/05 Modified: (J. Lucca)
* Can turn off histogram SECTIONS and/or TYPES on any ch##.htm page
* by setting them here to false. Both default to true in quiz.js.
*/
//////////////////////////////////////////////////////////////////////////////
// HISTOGRAM AND RANDOMIZE OPTIONAL SETTINGS
// Can turn off per quiz or leave defaults (as set in quiz.js) as true.
// randomize_questions=true; HISTOGRAM=true; SECTIONS=true; TYPES=true;
//////////////////////////////////////////////////////////////////////////////
//HISTOGRAM = false
//SECTIONS = false
TYPES = false
/**
* Required settings for all Gradebooks:
* chapter_no, book_no, book_title
*
* Required when HISTOGRAM = true:
* At least a section_title[] with its matching q#section for each question
* or a type_title[] with its matching q#type for each question.
* Without at least one of these you won't get any histograms.
*/
// ////////////////////////////////////////////////////////////////////////////
// BEGIN PASTE - Paste any existing quiz javascript questions
// between this comment and one just like it near bottom of page
// ////////////////////////////////////////////////////////////////////////////
// General settings
var chapter_no = "24"
var book_no = 97422
var book_title = "Physics for Engineers and Scientists 3rd Edition"
quiz_name = "Physics for Engineers and Scientists 3rd Edition, Chapter 24 Quiz"
var confirm="/college/physics/om/_content/_index/confirm.htm"
number_answers = new Array(3,5,5,5,5);
var number_questions = number_answers.length;
// Sections
section_title = new Array() //Leave at least this line! Can delete ones under.
section_title[1] = "24.1 Electric Flux"
section_title[2] = "24.2 Gauss’ Law"
section_title[3] = "24.3 Applications of Gauss’ Law"
section_title[4] = "24.4 Superposition of Electric Fields"
section_title[5] = "24.5 Conductors and Electric Fields"
// Types
type_title = new Array(); //Leave at least this line! Can delete ones under.
q1 = "
Consider the point charge and surface of the figure above. The net flux through this surface is";
q1answer = "c";
q1review = "Since all the field lines that enter the surface also leave it, the net flux through the surface is zero.";
q1type = "";
q1section = "1";
q1a = "Positive ";
q1b = "Negative ";
q1c = "Zero";
q2 = "A sphere of radius R is in a region of uniform electric field E. The net flux through the surface of the sphere is";
q2answer = "e";
q2review = "Since the field is uniform, field lines enter the sphere on one side and leave it on the other; the net flux through the sphere is zero.";
q2type = "";
q2section = "2";
q2a = "E × πR2 ";
q2b = "E × 2πR2 ";
q2c = "E × (4/3)πR2 ";
q2d = "E × πR3 ";
q2e = "Zero";
q3 = "The electric field at some distance from a long wire carrying a uniform charge distribution is 1.0 × 105 N/C. What is the electric field at twice the distance?";
q3answer = "b";
q3review = "We saw in Example 7, as in Chapter 23, that the electric field E due to a linear charge distribution varies as 1/r. Thus at twice the distance, the field is half as large.";
q3type = "";
q3section = "3";
q3a = "2.5 × 104 N/C ";
q3b = "5.0 × 104 N/C ";
q3c = "1.0 × 105 N/C";
q3d = "2.0 × 105 N/C ";
q3e = "4.0 × 105 N/C";
q4 = "Two parallel infinite sheets carry positive uniform surface charge densities σ and 2σ.What is the magnitude of the electric field between the sheets? Outside both sheets?";
q4answer = "b";
q4review = "The field contribution due to the sheet with charge density σ is σ/2ε0; that due to the 2σ sheet is σ/ε0. Since both charge densities are positive, each field contribution is directed away from its respective sheet. Thus between the two sheets these contributions oppose to give a net field of magnitude σ/ε0 – σ/2ε0 = σ/2ε0, and outside the sheets the two contributions are parallel and give a net field σ/2ε0 + σ/ε0 = 3σ/2ε0.";
q4type = "";
q4section = "4";
q4a = "σ/ε0; 3σ/ε0 ";
q4b = "σ/2ε0; 3σ/2ε0 ";
q4c = "3σ/2ε0; σ/2ε0";
q4d = "σ/ε0, 0 ";
q4e = "0, σ/ε0";
q5 = "A point charge Q is at the center of an uncharged spherical conducting shell. How much charge is on the inner surface of the shell? The outer surface?";
q5answer = "d";
q5review = "The point charge Q induces an opposite charge –Q on the inner surface of the conductor; this ensures E = 0 inside the conducting shell. Since the shell is overall uncharged, the charge –Q on the inner surface implies there is a charge Q on its outer surface.";
q5type = "";
q5section = "5";
q5a = "0; 0 ";
q5b = "Q; 0 ";
q5c = "–Q; 0 ";
q5d = "–Q; Q ";
q5e = "Q; –Q";