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Point Charge Electric Field JS Model Documents

This material has 4 associated documents. Select a document title to view a document's information.

Main Document

Coulomb's Lae and Electric Fields JS Model 

written by Wolfgang Christian and Anne Cox

This page features a set of three models for exploring electric field strength and direction using one or more point charges. Positive point charges are represented as red circles; negative point charges are blue circles. The simulations display the electric field using color-coded unit vectors together with a draggable "test charge" and its force vector. The field magnitude is shown in a yellow message box near the bottom of the view as the test charge is dragged.

The Coulomb's Law and Electric Field JavaScript model was developed using version 5 of the Easy Java Simulations (EJS 5) modeling tool. Although EJS is a Java program, EJS 5 creates stand-alone JavaScript programs that run in almost any browser.

Published August 16, 2016
Last Modified August 18, 2016

This file has previous versions.

Supplemental Documents (2)

Electric Field with Test Charges 

Add more test charges to study electric field properties.

Last Modified August 27, 2016

Electric Field with Moving Test Charges 

Explore electric field properties by allowing test charges to move under the influence of the field.

Last Modified August 27, 2016

Source Code Documents

Point Charge Electric Field Source Code 

This source code zip archive contains an XML representation of the Point Charge Electric Field JS Model.   Unzip this archive in your Ejs workspace to compile and run this model using EJS 5.  Although EJS is a Java program, EJS 5 creates a stand alone JavaScript program from this source code.

Last Modified August 18, 2016

This file has previous versions.