Helmholtz Coils

APS Excellence in Physics Education Award
November 2019

Science SPORE Prize
November 2011

The Open Source Physics Project is supported by NSF DUE-0442581.

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Helmholtz Coils

written by Fu-Kwun Hwang and Wolfgang Christian
edited by Robert Mohr

The EJS Helmholtz Coils Model shows a the magnetic field between two circular coils of wire. The default configuration, known as a Helmholtz coil, sets the separation distance D equal to the coil radius R. These values produce a nearly uniform magnetic field B between the coils

The Helmholtz Coils Model 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_ntnu_em_HelmholtzCoils.jar file will run the program if Java is installed.

Please note that this resource requires at least version 1.5 of Java (JRE).

.jar

download 1715kb .jar
Last Modified: June 6, 2014
previous versions

1 source code document is available

Subjects	Levels	Resource Types
Electricity & Magnetism - Magnetic Fields and Forces = Force on Moving Charges = Magnetic Fields	- Lower Undergraduate - High School	- Instructional Material = Model

Intended Users	Formats	Ratings
- Learners - Educators	- application/java	Currently 5.0/5 Rated 5.0 stars by 1 person Want to rate this material? Login here!

Access Rights:: Free access
License:: This material is released under a GNU General Public License Version 3 license.
Rights Holder:: Fu-Kwun Huang and Wolfgang Christian
Record Cloner:: Metadata instance created May 19, 2009 by Wolfgang Christian
Record Updated:: June 6, 2014 by Andreu Glasmann

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ComPADRE is beta testing Citation Styles!

Record Link

<a href="https://www.compadre.org/OSP/items/detail.cfm?ID=8983">Hwang, Fu-Kwun, and Wolfgang Christian. "Helmholtz Coils."</a>

AIP Format

F. Hwang and W. Christian, Computer Program HELMHOLTZ COILS (2009), WWW Document, (https://www.compadre.org/Repository/document/ServeFile.cfm?ID=8983&DocID=1196).

AJP/PRST-PER

F. Hwang and W. Christian, Computer Program HELMHOLTZ COILS (2009), <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=8983&DocID=1196>.

APA Format

Hwang, F., & Christian, W. (2009). Helmholtz Coils [Computer software]. Retrieved February 8, 2026, from https://www.compadre.org/Repository/document/ServeFile.cfm?ID=8983&DocID=1196

Chicago Format

Hwang, Fu-Kwun, and Wolfgang Christian. "Helmholtz Coils." https://www.compadre.org/Repository/document/ServeFile.cfm?ID=8983&DocID=1196 (accessed 8 February 2026).

MLA Format

Hwang, Fu-Kwun, and Wolfgang Christian. Helmholtz Coils. Computer software. 2009. Java (JRE) 1.5. 8 Feb. 2026 <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=8983&DocID=1196>.

BibTeX Export Format

@misc{ Author = "Fu-Kwun Hwang and Wolfgang Christian", Title = {Helmholtz Coils}, Year = {2009} }

Refer Export Format

%A Fu-Kwun Hwang %A Wolfgang Christian %T Helmholtz Coils %E Robert Mohr, (ed) %D 2009 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=8983&DocID=1196 %O application/java

EndNote Export Format

%0 Computer Program %A Hwang, Fu-Kwun %A Christian, Wolfgang %D 2009 %T Helmholtz Coils %E Mohr, Robert %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=8983&DocID=1196

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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.

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