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
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 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. download 1131kb .pdf
Published: September 10, 2010
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. download 502kb .pdf
Published: September 10, 2010
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. download 18kb .zip
Last Modified: August 11, 2010
Metadata instance created
August 11, 2010
by Wolfgang Christian
June 11, 2014
by Andreu Glasmann
Last Update when Cataloged:
September 1, 2009
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.
Christian, W. (2010). Point Charge Electric Field Demo Model (Version 1.0) [Computer software]. Retrieved May 27, 2016, from http://www.compadre.org/Repository/document/ServeFile.cfm?ID=10312&DocID=1799
%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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changes made: redesign the panel for control to be bottom added more options to the menu for ease of use made the drawing of charges proportional to the charges made the collision detection to pause when the test charge is inside the charges added evolution page to reflect the physics of motion added test mass, m = 1 kg added trail to show path of test charge that can be drag away and it will start from vx=vy=0