Magnetic Field

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Introduction: Magnetic Field

This very simple electric motor is called a homopolar motor because the magnetic field does not change direction or strength. With only three parts, it is probably the simplest motor you can possibly make.

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    32 Comments

    Can you use any size magnet and any sized battery?

    Im speechless(in a good way) By the way, where would you get the stiff copper wire and sculpt it?

    2 replies

    Like FireCrazyAlchemist said, you could use a wire hanger, just scrape off the coating and make sure you have continuity

    You can Sometimes Find it in Transformers,One is Long,And One is short,and Stiff. You could also Try CAT5,It has copper wire.

    it was cool, awesome, marvelous, i want to try it

    Hi, it's really nice! But can you give us any tips on how to bend the wire like the shapes you have made, without getting very frustated?

    1 reply

    You can use needle nose pliers. Sometimes called, Jewelry pliers. They can make small, sharp curls and designs.

     great Idea., I doit it with my kids :)

    can i use a paper clip ?

    I found that if you put small dent in top of battery, it keeps the wire in place so doesn't fall off. Use a small nail or something with a with a point. Don't hit to hard or it will punch a hole in battery.

    Where did you get the idea to make this. Its pretty cool. Do you have any other magnet tricks.

    Yes just make sure you scrape off all the coating on it

    with thease do you have to change the battery much...im trying to make one with cds and batteries that spins with magnetic power

    Please tell me How to see the video , I can not open it , it is just gray .

    1 reply

    so as long as the wire touches both ends it works?

    Does it drain the batt or just utilize the electrical feild?

    Nice thats a really neat one.