The interactive animation illustrates the principle of electromagnetic induction using the example of a rotating conductor loop.
The 3D model can be rotated interactively. You can zoom in and out the rectangles in the animation with a mouse click. In the following screenshot only the 3D model is shown.
How is the induced voltage generated?
When a conducting loop rotates in a magnetic field, the magnetic flux through the area enclosed by the loop changes. According to Faraday’s law of induction, this change generates an induced voltage. If the loop rotates uniformly, the magnitude and direction of the voltage change periodically, producing an alternating voltage.
When the circuit is closed, an induced current flows. This principle forms the basis of a simple AC generator. The animation can be used to examine the rotation of the conducting loop, the magnetic field, and both conventional and electron current direction.
The animation shows a conductor loop that rotates within the magnetic field of a horseshoe magnet. The rotation induces an electrical voltage in the conducting loop. When the circuit is closed, an electric current flows. The 3D view shows an electron flow represented as blue spheres, moving through the conductive material. In the 2D view, the magnetic field and the technical current directions can be displayed. This also illustrates the relationship between physical and technical current direction.
The rotation speed can be freely adjusted via a virtual controller. The movement of the electrons adjusts accordingly.
Overview and Download
| Title | Electrical induction 2 |
| Target Audience | Teachers and Lecturers |
| Platforms | Microsoft® Windows® Apple® Macintosh® |
| Features | Full-screen mode Lossless scaling Large screens and projectors supported |
| License | Freeware (for non-commercial use) |
| Download | Contact |
Contributors
C. Hein, S. Rikowski
Sources
- Authoring tool: Adobe Animate
- 3D engine for 3D model: Papervision3D 2.0
- Idea and first concept: Tamara Riehle
- 3D rotations: Algorithm adopted from Federico Calvo: http://blog.federicocalvo.com/2009/03/papervision-3d-sphere-globla-axis.html
- Curved field lines: Bezier3D class from Aleksandar Mancic
