written by
Anne Cox, Wolfgang Christian, and Francisco Esquembre
The EJS Electric Field: What is Wrong? Package is a collection of models for electrostatics with errors intentionally built into each model. Users can move charges around and see the force, observe the electric field generated by charge configurations, and observe the motion of test particles in electric fields to try to identify the errors in the simulation. Users can inspect, modify and correct any simulation in the package by right-clicking within the plot and selecting "Open Ejs Model" from the pop-up menu item. The package also includes a brief overview of programming basics needed to correct the models.
The Electric Field: What is Wrong? Package was created using the Easy Java Simulations (Ejs) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double clicking the ejs_em_electric_wiw.jar file will launch the package if Java is installed. Navigate within the package and click on a green triangle to run a particular simulation. Ejs is a part of the Open Source Physics Project and is designed to make it easier to access, modify, and generate computer models. Additional Ejs models are available on ComPADRE.
Teaching Physics using Intentionally Incorrect Simulations Article (pdf) describing the use of intentionally incorrect simulations (What is Wrong?) in electrostatics to teach physics and some computation. Journal article available from The Physics Teacher , Vol 49, Issue 5, Pages 273-279 http://dx.doi.org/10.1119/1.3578417 . …
Article (pdf) describing the use of intentionally incorrect simulations (What is Wrong?) in electrostatics to teach physics and some computation. Journal article available from The Physics Teacher, Vol 49, Issue 5, Pages 273-279 http://dx.doi.org/10.1119/1.3578417.
Coulomb Force What Is Wrong
The Coulomb Force model from the "What is wrong" package. download 1325kb .jar
Last Modified: January 3, 2016
previous versions
Electric Field: What is Wrong? Source Code
Source Code for the Electric Field: What is Wrong? package. The source code archive contains an XML representation of the Ejs model. Unzip this archive in your Ejs Workspace to compile and run this model using Ejs. download 330kb .zip
Published: April 14, 2010
Rights: This material is released under the GNU General Public License Version 3.
Electric Field: What is Wrong? Solutions source code. In order to access this file, please Login to the Open Source Physics collection.
Source code of the solutions for the Electric Field: What is Wrong? package. The source code is password protected (contact the author). The source code archive contains an XML representation of the Ejs model. Unzip this archive in your Ejs Workspace to compile and run this model using Ejs.
.zip file (148 kb Compressed File)
Published: April 14, 2010
4G (9-12) #3. There are two kinds of charges?positive and negative. Like charges repel one another, opposite charges attract. In materials, there are almost exactly equal proportions of positive and negative charges, making the materials as a whole electrically neutral. Negative charges, being associated with electrons, are far more mobile in materials than positive charges are. A very small excess or deficit of negative charges in a material produces noticeable electric forces.
<a href="https://www.compadre.org/OSP/items/detail.cfm?ID=9964">Cox, A, W. Christian, and F. Esquembre. "Electric Field: What is Wrong? Package." Version 1.0.</a>
A. Cox, W. Christian, and F. Esquembre, Computer Program ELECTRIC FIELD: WHAT IS WRONG? PACKAGE, Version 1.0 (2010), WWW Document, (https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9964&DocID=1589).
A. Cox, W. Christian, and F. Esquembre, Computer Program ELECTRIC FIELD: WHAT IS WRONG? PACKAGE, Version 1.0 (2010), <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9964&DocID=1589>.
Cox, A., Christian, W., & Esquembre, F. (2010). Electric Field: What is Wrong? Package (Version 1.0) [Computer software]. Retrieved February 12, 2025, from https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9964&DocID=1589
Cox, A, W. Christian, and F. Esquembre. "Electric Field: What is Wrong? Package." Version 1.0. https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9964&DocID=1589 (accessed 12 February 2025).
Cox, Anne, Wolfgang Christian, and Francisco Esquembre. Electric Field: What is Wrong? Package. Vers. 1.0. Computer software. 2010. Java (JRE) 1.5, Java Archive file.12 Feb. 2025 <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9964&DocID=1589>.
@misc{
Author = "Anne Cox and Wolfgang Christian and Francisco Esquembre",
Title = {Electric Field: What is Wrong? Package},
Month = {April},
Year = {2010}
}
%A Anne Cox %A Wolfgang Christian %A Francisco Esquembre %T Electric Field: What is Wrong? Package %D April 14, 2010 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9964&DocID=1589 %O 1.0 %O Java Archive file %O application/java %O Java Archive file
%0 Computer Program %A Cox, Anne %A Christian, Wolfgang %A Esquembre, Francisco %D April 14, 2010 %T Electric Field: What is Wrong? Package %7 1.0 %8 April 14, 2010 %9 Java Archive file %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9964&DocID=1589
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