CK-12 Foundation
Ck 12: Force on an Electric Current in a Magnetic Field
[Free Registration/Login may be required to access all resource tools.] Students learn how a magnetic field affects moving charged particles or an electric current carried by a wire.
Texas Instruments
Texas Instruments: The Magnetic Field in a Slinky
Students use a Magnetic Field Sensor to measure the magnetic field and the current in a solenoid. They explore factors that affect the magnetic field, study how the field varies in parts of the solenoid, and determine the permeability...
Massachusetts Institute of Technology
Mit: Open Course Ware: Courses: Physics Ii: Electricity and Magnetism
College-level physics course highlighting electricity and magnetism. This course is divided into several modules including electric fields, magnetic fields, electromagnetic forces, conductors and dielectrics, electromagnetic waves, and...
National High Magnetic Field Laboratory
Magnet Academy: Wilhelm Weber
Find out more about German physicist Wilhelm Weber, who developed and enhanced a variety of devices for sensitively detecting and measuring magnetic fields and electrical currents.
Learn Engineering
Learn Engineering: Understanding Rotating Magnetic Field & Synchronous Speed
Get information about rotating magnetic fields and how electric machines use them for their operation. Discusses synchronous speed and number of poles on an electrical machine. The accompanying article discusses the topics found in the...
TeachEngineering
Teach Engineering: Both Fields at Once?!
This lesson discusses the result of a charge being subject to both electric and magnetic fields at the same time. It covers the Hall effect, velocity selector, and the charge to mass ratio. Given several sample problems, students learn...
National Institutes of Health
Niehs: Kids' Pages: What Are Electric and Magnetic Fields?
Informational fact sheet on electricity with emphasis on electric and magnetic fields.
Physics4kids
Physics4kids: Electricity and Magnetism: Magnets
Here is the site to help you learn all about magnetism and magnets! Find out what a magnet is and how it works. Click for additional details on charges, conductors, magnetic fields, currents, resistance as well as the Laws of Faraday and...
CK-12 Foundation
Ck 12: Magnetic Force on Moving Electric Charges
[Free Registration/Login may be required to access all resource tools.] This lesson examines how moving electric charges are affected when inside a magnetic field. Students are shown how to calculate the force on a single moving electric...
Khan Academy
Khan Academy: Experiment: What's the Shape of a Magnetic Field?
See drawing from Hans Christian Orsted's lab notebook showing an experiment in which an electric charge passing through a wire seemed to create a magnetic field!
Science Buddies
Science Buddies: Abracadabra! Levitating With Eddy Currents!
Did you know that not all trains run on tracks? Some of the world's fastest trains are magnetic levitation trains (maglev). This means that the carriage of the train is suspended over the rails with no support, but only with magnetic...
California Institute of Technology
Magnet Lab: Caltech Physics Applets
Although specifically designed for physics students at Caltech, anyone interested in learning more about electricity, magnetism or various other physical phenomena can benefit by exploring these interactive applets. A circuit tutorial...
Physics4kids
Physics4 Kids: Electricity and Magnetism: Magnetic Fields
Explains magnetic fields, how they differ from electric fields, and attraction and repulsion.
National High Magnetic Field Laboratory
Magnet Academy: Carl Friedrich Gauss
Although he is best known as one of the greatest mathematicians of all time, Carl Friedrich Gauss was also a pioneer in the study of magnetism and electricity. To facilitate an extensive survey of terrestrial magnetism, he invented an...
National High Magnetic Field Laboratory
Magnet Academy: William Thomson, Lord Kelvin
William Thomson, known as Lord Kelvin, was one of the most eminent scientists of the nineteenth century and is best known today for inventing the international system of absolute temperature that bears his name. He made contributions to...
National High Magnetic Field Laboratory
Magnet Academy: Zeeman Effect 1896
Most of us have seen the rainbow-hued breakdown of the composition of light. Light is of course a form of energy. A magnetic field changes the behavior of light- a phenomenon known as the Zeeman effect.
Mocomi & Anibrain Digital Technologies
Mocomi: What Is Magnetic Field?
Magnets can be used as toys, tools, and more. Identify how magnets work, what a magnetic field is, as well as what a magnetic force is.
Utah State Office of Education
Utah Science: Magnetized
A unit all about magnets! Explore magnetic forces, types of magnets, and more through these informative activities.
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...
CK-12 Foundation
Ck 12: Physical Science: Magnets
A module that uses pictures, videos, reading passages, and review question to go over what a magnet and magnetic pole are, and how magnetic force is related to magnetic field. This site may require free registration to access all...
TeachEngineering
Teach Engineering: Whose Field Line Is It, Anyway?
Students teams each use a bar magnet, sheet of paper and iron shavings to reveal the field lines as they travel around a magnet. They repeat the activity with an electromagnet made by wrapping thin wire around a nail and connecting...
TeachEngineering
Teach Engineering: The Electric and Magnetic Personalities of Mr. Maxwell
Students are briefly introduced to Maxwell's equations and their significance to phenomena associated with electricity and magnetism. Basic concepts such as current, electricity and field lines are covered and reinforced. Through...
Science Buddies
Science Buddies: How the Strength of a Magnet Varies With Temperature
Physicists sometimes study matter under extreme conditions. For example, think of the emptiness of interstellar space vs. the unimaginable crush of pressure at the center of a neutron star, or an object dipped in liquid nitrogen vs. the...
Exploratorium
Exploratorium: Science Snacks: Magnetic Pendulums
See how electricity and magnetism interact with this activity. Activity has students creating a current by swinging a copper coil through a magnetic field. The copper coil will start a second coil swinging as well.