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Electric Field: What is Wrong? Package
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.
Please note that this resource requires at least version 1.5 of Java (JRE).
2 supplemental documents are available
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 . …
download 125kb .pdf
Published: April 30, 2011
2 source code documents are available
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.
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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
AAAS Benchmark Alignments (1993 Version)
4. THE PHYSICAL SETTING
G. Forces of Nature
NSES Content Standards
Con.B: Physical Science
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Electric Field: What is Wrong? Package:
Covers the Same Topic As Coulomb's Law and Electric Field Package
Coulomb's Law and Electric Field package shows correct versions of similar simulations.relation by Anne Cox
Is Based On Easy Java Simulations Modeling and Authoring Tool
The Easy Java Simulations Modeling and Authoring Tool is needed to explore the computational model used in the Electric Field: What is Wrong? Package.relation by Wolfgang Christian
Is a Teaching Guide For Physics Classroom: Charge Interactions Revisited
Is a Teaching Guide For The Physics Classroom: Electric Force - Coulomb's Law
Is a Teaching Guide For The Physics Classroom: Electric Force - Inverse Square Law
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