The Magnet Falling Through Ring model shows the dynamics and the induced current when a magnet falls through a conducting ring.
The current in the ring is computed by electromagnetic induction using to Faraday's law and the induced emf is proportional to the negative of the rate of change of magnetic flux ?. The direction of the induced current is determined by Lenz's law, the induced current produces magnetic field which tends to oppose the change in magnetic flux that induces such currents.
The Magnet Falling Through Ring 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_mosem2_em_MagnetFallingThroughRing.jar file will run the program if Java is installed.
Please note that this resource requires
at least version 1.5 of Java (JRE).
Magnet Falling Through Ring Source Code
The source code zip archive contains an XML representation of the EJS Point Magnet Falling Through Ring model. Unzip this archive in your EJS workspace to compile and run this model using EJS. download 15kb .zip
Last Modified: September 3, 2010
Metadata instance created September 3, 2010
by Wolfgang Christian
Record Updated:
June 10, 2014
by Andreu Glasmann
Last Update when Cataloged:
September 2, 2010
notice the electrons are space too near each other
Author: lookang
Posted: September 14, 2010 at 5:57AM
perhaps a better visualization of the electrons (red balls) would be possible from the an increased in the spacing between them and a slow down of the angular velocity. refer to http://phet.colorado.edu/en/simulation/faraday they have done the student research on visualization of electrons in electromagnetic induction, could be useful to look at it.
currently, i cannot make out the motion of the electrons easily.
F. Esquembre, Computer Program MAGNET FALLING THROUGH RING MODEL, Version 1.0 (2010), WWW Document, (https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10327&DocID=1813).
F. Esquembre, Computer Program MAGNET FALLING THROUGH RING MODEL, Version 1.0 (2010), <https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10327&DocID=1813>.
Esquembre, F. (2010). Magnet Falling Through Ring Model (Version 1.0) [Computer software]. Retrieved February 7, 2025, from https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10327&DocID=1813
Esquembre, Francisco. "Magnet Falling Through Ring Model." Version 1.0. https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10327&DocID=1813 (accessed 7 February 2025).
%A Francisco Esquembre %T Magnet Falling Through Ring Model %D September 2, 2010 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10327&DocID=1813 %O 1.0 %O application/java
%0 Computer Program %A Esquembre, Francisco %D September 2, 2010 %T Magnet Falling Through Ring Model %7 1.0 %8 September 2, 2010 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=10327&DocID=1813
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