Physics: Motors and Generators
Find out how relationships between magnets and electricity were discovered and how they are explained by the Electromagnetic Theory. Learn about a motor, a device that has the ability to convert electrical energy into mechanical energy. Also learn about another device – a generator that is used when mechanical energy is transferred into electrical energy. Discover what electromagnets are and how they work. Includes photographs, animations, and experiments. There is a link to an eThemes resource on magnets.
Explain that Stuff: Magnetism
Learn about the basics of magnetism - what is it, what is a magnetic field, how can we measure magnetism, what is an electromagnet, the theory of electromagnetism, what use are magnets, which materials are magnetic, how different materials react to magnetism, what causes magnetism, and a brief history of magnetism.
How Do I Make an Electromagnet?
Follow the four easy steps to creating your own electromagnet.
Review what you know about electromagnets, then apply your knowledge by designing audio speakers that work.
Simple Motor Video
This video demonstrates how electromagnetism can be used to create a simple motor. (Total Running Time: 2:05)
NOTE: This site includes ads.
NOTE: This site includes a discussion board. (forum, message board, etc.)
Electricity and Magnetism: AC Generator Action
Learn what an AC generator does and view an animation to see how it works.
Video: How the Van Graaff Generator Works
Watch an animated movie and listen to an explanation on how the Van Graaff generator works.
Fact Monster: Evolution of Electromagnetic Theory
Learn how the connection between electricity and magnetism was discovered which led to forming the Electromagnetic Theory. Click on highlighted words to learn how the electromagnet, generator, and motor work. NOTE: The site includes pop-up and banner ads.
How Stuff Works: How Electromagnets Work
Find out how electromagnets work. Follow the link "Next" to learn about magnetic fields, batteries, and a coil. Includes experiments and animations. NOTE: The site includes pop-up and banner ads. NOTE: The site leads to websites with guest books.
How Stuff Works: How Electric Motor Work
Explore the pages of this web site to learn how electric motors work. Illustrated with labeled photographs. NOTE: The site includes pop-up and banner ads. NOTE: The site leads to websites with guest books.
Learn about two types of generators, how they work, and where they are used. Click on the "Next" button to learn about electric motors their use and types.
Compare a Generator to an Electric Motor
Here is a summary of what motors and generators have in common.
eThemes Resource: Magnets
These sites include explanations and principles of magnetism. Learn the properties of magnets and how magnetic levitation trains work. Includes links to eThemes Resources on gravity and motion.
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