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The magnetic wire. Class members create a magnetic field by running electricity through a wire. The video included in the resource provides information on how this effect is used to make electrical motors.
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Concepts
Instructional Ideas
- Use the demonstration at the beginning of a lesson on electric motors
- Utilize different sizes of magnets to determine if the size makes a difference
Classroom Considerations
- Allow enough wire free to be able to switch the wires to the other terminals of the battery
Pros
- Provides a tip on how to determine the polarity of a magnetic field surrounding a wire
- The pictures show what to expect when performing the demonstration
Cons
- Using the right-hand rule may be difficult since the palm will either push up or down based upon the orientation of the magnets