Students construct electromagnets and determine that the more winds of wire coil around the core will increase the strength of the electromagnet.
In this video we show you how to build a simple motor. Created by Karl Wendt.
Students will construct a simple electromagnet using a dry cell, wire, nail, or other object containing iron (5.4 e), plan and conduct an investigation to determine the strength of an electromagnet (5.4 e), and define a problem and design a solution that uses an electromagnet; demonstrate and explain how the electromagnet works (5.4 e). After the completion of this module students will understand how to construct an electromagnet and explain how one works. This module was developed by Sarah Donnelly as part of a Virginia Commonwealth University STEM initiative sponsored by the Virginia Department of Education.
Play with a bar magnet and coils to learn about Faraday's law. Move a bar magnet near one or two coils to make a light bulb glow. View the magnetic field lines. A meter shows the direction and magnitude of the current. View the magnetic field lines or use a meter to show the direction and magnitude of the current. You can also play with electromagnets, generators and transformers!
Light a light bulb by waving a magnet. This demonstration of Faraday's Law shows you how to reduce your power bill at the expense of your grocery bill.
Light a light bulb by waving a magnet. This demonstration of Faraday's Law shows you how to reduce your power bill at the expense of your grocery bill.
Generate electricity with a bar magnet! Discover the physics behind the phenomena by exploring magnets and how you can use them to make a bulb light.
This activity is a guided inquiry investigation where students will propose a question on what makes an electromagnet stronger. They will conduct a controlled experiment to answer their own question.
Explore the interactions between a compass and bar magnet. Discover how you can use a battery and wire to make a magnet! Can you make it a stronger magnet? Can you make the magnetic field reverse?
Why does the deflection change when an electromagnet is attached to the circuit? Does it matter what side of the electromagnet we test? Created by Brit Cruise.
In this activity, learners create a tiny electric, motorized dancer. Learners use the interactions of magnetism and electric current to make a wire spin, while displaying the Lorentz Force in action. This lesson guide provides one of many ways to build the spinner and links to other methods.
By pulsing the connection to the battery we can cause a compass to spin. How is this working? Created by Brit Cruise.