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# Teaching animation: Electromagnetic induction by rotating magnets

The interactive animation illustrates the principle of electromagnetic induction using the example of a rotating magnet.

The 3D model can be rotated.

Click your mouse to zoom the rectangle in or out.

The animation was originally developed as a offline application for Windows and Macintosh systems and for integration into Microsoft PowerPoint slides. The online version presented here serve as a preview. The exe or app file can be downloaded free of charge from members area.

Nach dem Download kann die Animation im Vollbildmodus angezeigt werden. Auch die Einbindung in PowerPoint ist möglich.

## Description

The animation shows how an electric voltage is induced by rotary motion.

A rod magnet rotates in the interior of the conductor loop shown. Inside the conductor loop the electrons are symbolized by blue dads.

The electrons move through the conductor loop. The orientation and strength of the magnetic field depends on how many electrons are deflected. You have the highest voltage when the field lines of the magnetic field move precisely at a right angle through the conductor loop.

The animation contains two areas with the following content:

left3D model of a conductor and a rotating magnet. Inside the conductor, the electrons are shown. As the magnet rotates, the electrons in the conductor are set in motion.
rightThe 3D model in a profile view. The technical current direction is represented by symbols. Moreover, the field lines of the magnetic field can be shown.

## General information

Title: Teaching animation: Electromagnetic induction by rotating magnets Teachers and lecturersIndependent learners Microsoft® Windows®Microsoft® PowerPoint®Apple® Macintosh® Resizable without the loss of visual clarityNo installation required Licensing Information

## Further animations for PCs

Principle of electromagnetic induction

Electromagnetic induction with rotating conductor loop

Snellius law of refraction

Buoyancy and drag force on the wing profile

Electromagnetic induction using rotating magnets (simplified)

Workings of an electric generator (simplified)

Workings of an electric generator

Construction of a crankshaft

Decomposition of forces on a wedge

## Sources

• 3D engine for 3D model: Papervision3D 2.0
• Idea and initial concept: Tamara Riehle
• 3D rotations: Algorithm adopted from Federico Calvo: http://blog.federicocalvo.com/2009/03/papervision-3d-sphere-globla-axis.html
• Formulas

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