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Kids can easily make an electromagnet using nothing more than 5 feet of copper wire, a large iron nail, a rubber band, sandpaper and an AA battery. These objects are readily available around the house, and there are few ... More »

www.reference.com Science Physics Magnetism

A current relay is switch that utilizes an armature powered by an electromagnet in order to complete an electrical circuit. Relays are commonly used to operate the circuits that provide power to motors and lights. More »

www.reference.com Home & Garden Home Maintenance Electrical

Some interesting science projects include creating an electromagnet out of a battery, copper wire and an iron nail; making a lava lamp out of a soda bottle, vegetable oil and a fizzing tablet; and making an egg float in ... More »

www.reference.com Education Homework Help Study Skills
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Some interesting science projects include creating an electromagnet out of a battery, copper wire and an iron nail; making a lava lamp out of a soda bottle, vegetable oil and a fizzing tablet; and making an egg float in ... More »

www.reference.com Education Homework Help Study Skills

An iron nail can be made into a magnet by wrapping it with insulated copper wire and letting low-voltage direct current run through the coil. The iron nail will become a temporary magnet. More »

www.reference.com Science Physics Magnetism

To make a temporary magnet or electromagnet, students can use an iron core, surround it with copper wire and then pass an electric current through this arrangement to magnetize the nail. When making an electromagnet for ... More »

www.reference.com Science Physics Magnetism

To build a powerful electromagnet, use an iron nail, railroad spike or ferrite rode as a magnetic core. Take 1 inch of the coating from the end of a 22-gauge insulated wire. Use an all-purpose adhesive to attach the wire... More »

www.reference.com Science Physics Magnetism