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Title:
| Physics: Motors and Generators |
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Description:
| 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. |
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Grade Level:
| 2, 3, 4, 5, 6 |
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Resource Links:
| BBC: Physics: Electromagnetic Forces
To understand how an electric motor works, start with the introduction page and work your way through the web site using the "Next" link at the bottom of each page. You will learn about magnetic fields, electromagnets, soft iron, and more. Illustrated with animations.
NOTE: The "Talk" link leads to message boards.
BBC: Electricity and Magnetism: Generators
Learn how generators work and see an example of a bicycle dynamo. Includes an animated demonstration. NOTE: The "Talk" link leads to message boards.
Electricity and Magnetism: AC Generator Action
Learn what an AC generator does and view an animation to see how it works.
Electricity and Magnetism: DC Generator Action
Find out what is hidden inside of a DC generator. Adjust frequency's rate on the animated simulator and watch how generator changes its work.
Generator
Here is an interactive applet simulator that demonstrates how generators work. Select between AC and DC generator types and adjust the rotation speed of a generator to watch how the animation changes.
Video: How the Van Graaff Generator Works
Watch an animated movie and listen to an explanation on how the Van Graaff generator works.
Direct Current Electrical Motor
This is another interactive applet that simulates the work of an electrical motor.
Joseph Henry
Read a biography of Joseph Henry, the man who invented the electric motor.
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.
Generators
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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Education Standards:
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MO Standards:
3, 2, 7, 1.1, 1.2, 1.4, 1.6
If you are an eMINTS teacher and standards have not been defined for your
state, click the button below to request that they be assigned to this resource.
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