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J6-04. Low-Power High-Force Electromagnet
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J6-04. Low-Power High-Force Electromagnet
Purpose
To show that a small amount of energy can produce large magnetic forces.◙
Equipment
Battery operated magnet with keeper.
Suggestions
After two of the strongest guys in the class can't separate the magnet, separate it yourself (after discreetly◙disconnecting the battery), suggesting that they are really wimps.
Images
Description
A magnet and keeper are held together by energizing the magnet with a flashlight battery. It usually takes more than one person pulling on each side to separate the magnet and keeper. ◙
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See pagesj1. electrostatic charge & force
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See pagesj3. electric fields & potential
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See pagesj4. capacitance & polarization
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See pagesj5. magnetostatics
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See pagesj6. electromagnets
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See pagesj7. magnetic materials
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See pagesj1. electrostatic charge & force
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See pagesj3. electric fields & potential
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See pagesj4. capacitance & polarization
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See pagesj5. magnetostatics
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See pagesj6. electromagnets
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See pagesj7. magnetic materials
Physics Lab Demos