Coulomb's Law and Electric Field Package Applet Page
Coulomb's Law and Electric Field Package: Multipole Field Applet
The EJS Electric Multipole Model of a point charge (monopole), dipole, or a quadrupole showing the electric field. A slider changes the charge and a moveable detector shows the electric field direction and magnitude. A second window with a data table opens as well allowing for recording and analysis of detector values.
There is a second window that opens which contains a data table and allows for use of a built-in data analysis tool.
The Electric Multipole Model was created by Wolfgang Christian, Francisco Esquembre and Anne J Cox using the Easy Java Simulations (EJS) authoring and modeling tool. Exercises written by Anne J Cox.
You can examine and modify a compiled EJS model if you run the program by double clicking on the model's jar file. Right-click within the running program and select "Open EJS Model" from the pop-up menu to copy the model's XML description into EJS. You must, of course, have EJS installed on your computer.
Information about EJS is available at http://www.um.es/fem/Ejs/.
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