Museum of Science
Museum of Science and Industry: Online Science: Build an Electric Motor
Step-by-step illustrated instructions show how to build a simple electric motor using everyday materials to make a wire coil spin. An explanation of the science involved is given at the end, as well as tips on troubleshooting any...
Science Education Resource Center at Carleton College
Serc: Investigating Magnetism
For this physical science lab, students will investigate ways to control an electromagnet, how adding coils of wire can change the magnet, and the differences between an electromagnet and a bar magnet. Students will explain in their...
Creative Science Centre
Creative Science Centre: Notes on Coil Magnet Orientation and Rotation
An electrical generator is in essence a very simple device - magnets rotating within a coil of wire. To get a generator to work properly, one needs to make sure the coil and magnet orientation and rotation are correctly aligned. These...
Wikimedia
Wikipedia: Electromagnet
Easy-to-read information and an illustration of an "electromagnet," a type of magnet in which the magnetic field is induced by the flow of an electric current.
Creative Science Centre
Creative Science Centre: 6 Generators
Apart from the piezo generator, all of these generators are based on the same simple design, where magnets are rotated near to coils of wire (Faraday Induction). There is no coil switching so these are AC generators. On magnet movement,...
Science Education Resource Center at Carleton College
Serc: Electromagnetic Induction Demonstration
Students learn the relationship between the electric and magnetic fields. Specifically, they verify that a magnetic field is created in a current carrying coil of wire and a changing magnetic field can induce a current in another coil of...