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written by Wolfgang Christian
The Point Charge Electric Field Demo model shows the electric field with multiple point charge configurations and vector field visualizations.  Users can select these configurations from a drop down menu or can create their own configurations.

The Point Charge Electric Field Demo model was created using the Easy Java Simulations (EJS) modeling tool.  It is distributed as a ready-to-run (compiled) Java archive.  Double click the ejs_em_PointChargeElectricFieldDemo.jar file to run the program if Java is installed.

Please note that this resource requires at least version 1.5 of Java.
View the supplemental documents attached to this resource (3)
  • Single Particle Modification of Point Charge Model
    The Single Charge Electric Field model shows the electric field from a single charge and introduces the concept of a vector field.  The electric field is defined as the force per unit charge that would be experienced by a very small test charge at a given location. The Single Charge Electric Field model shows an ideal test charge with an arrow that represents the field at the test charge location.  The field magnitude is the length of the arrow at the test charge location and its value is shown in a textbox near the bottom of the view as the test charge is dragged.
  • High School Lesson Plan (Electric Field)
    A lesson plan for high school teachers using the Electric Field Model.  Plan includes: essential knowledge, learning ourcomes, student conceptual difficulties, and a Learning Cycle. Authored by Patricia Heller.
  • High School Student Worksheet (Electric Field)
    A student worksheet (high school) to accompany the Learning Cycle document and for use with the Electric Field Model.  Authored by Patricia Heller.
View the source code document attached to this resource
  • Point Charge Electric Field Demo Source Code
    The source code zip archive contains an XML representation of the EJS Point Charge Electric Field Demo model.   Unzip this archive in your EJS workspace to compile and run this model using EJS.
Subjects Levels Resource Types
Electricity & Magnetism
- Electric Fields and Potential
= Electric Field
- Lower Undergraduate
- Middle School
- High School
- Instructional Material
= Interactive Simulation
Intended Users Formats Ratings
- Learners
- Educators
- application/java
  • Currently 5.0/5

Rated 5.0 stars by 1 person

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Access Rights: Free access
License: This material is released under a GNU General Public License Version 3 license. Additional information is available.
Rights Holder: Wolfgang Christian
Record Cloner: Metadata instance created August 11, 2010 by Wolfgang Christian
Record Updated: Jun 11, 2014 by Andreu Glasmann
Last Update
when Cataloged:
September 1, 2009
Other Collections:

If Field Lines can be added, it would a great visualization tool

Author: lookang
Posted: August 21, 2010 at 11:26PM
Source: The Open Source Physics collection

i have always been very impressed by Physlets Electric field lines java applet
http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=734.0
the field lines is a concept continued to be explained in textbooks instead of the easily field vectors which is a common visualization in physics Ejs model.

chance to reproduce the field lines in this Ejs model? i believe it will be a great visualization tool.

» reply

AAAS Benchmark Alignments (2008 Version)

4. The Physical Setting

4G. Forces of Nature
  • 3-5: 4G/E3. Without touching them, an object that has been electrically charged pulls on all other uncharged objects and may either push or pull other charged objects.

AAAS Benchmark Alignments (1993 Version)

4. THE PHYSICAL SETTING

G. Forces of Nature
  • 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.

NSES Content Standards

Con.B: Physical Science
  • K-4: Light, Heat, Electricity, Magnetism
  • 5-8: Motion & Forces
  • 9-12: Interactions of Energy & Matter
ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
W. Christian, Computer Program POINT CHARGE ELECTRIC FIELD DEMO MODEL, Version 1.0 (2010), WWW Document, (http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10312&DocID=1799).
AJP/PRST-PER
W. Christian, Computer Program POINT CHARGE ELECTRIC FIELD DEMO MODEL, Version 1.0 (2010), <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10312&DocID=1799>.
APA Format
Christian, W. (2010). Point Charge Electric Field Demo Model (Version 1.0) [Computer software]. Retrieved November 22, 2014, from http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10312&DocID=1799
Chicago Format
Christian, Wolfgang. "Point Charge Electric Field Demo Model." Version 1.0. http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10312&DocID=1799 (accessed 22 November 2014).
MLA Format
Christian, Wolfgang. Point Charge Electric Field Demo Model. Vers. 1.0. Computer software. 2010. Java 1.5. 22 Nov. 2014 <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10312&DocID=1799>.
BibTeX Export Format
@misc{ Author = "Wolfgang Christian", Title = {Point Charge Electric Field Demo Model}, Month = {September}, Year = {2009} }
Refer Export Format

%A Wolfgang Christian
%T Point Charge Electric Field Demo Model
%D September 1, 2009
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10312&DocID=1799
%O 1.0
%O application/java

EndNote Export Format

%0 Computer Program
%A Christian, Wolfgang
%D September 1, 2009
%T Point Charge Electric Field Demo Model
%7 1.0
%8 September 1, 2009
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10312&DocID=1799


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Citation Source Information

The AIP Style presented is based on information from the AIP Style Manual.

The APA Style presented is based on information from APA Style.org: Electronic References.

The Chicago Style presented is based on information from Examples of Chicago-Style Documentation.

The MLA Style presented is based on information from the MLA FAQ.

Point Charge Electric Field Demo Model:

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 Point Charge Electric Field Demo Model.

relation by Wolfgang Christian
Is a Teaching Guide For Physics Classroom: Electric Field Lines

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