======Electromagnetic Train======


<WRAP right box>
**Materials: **{{$demo.materials_description}}\\
**Difficulty: **{{$demo.difficulty_description}}\\
**Safety: **{{$demo.safety_description}}\\
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**Categories:** {{$demo.categories}}
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**Alternative titles:** Magnetic Coil Train
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====Summary====                   
{{$demo.summary}}



====Procedure====  
  - Gather materials: copper wire (20 gauge), AAA battery, six neodymium magnets, dowel, and tape.  
  - Tape one end of the copper wire to the dowel, then wind tightly to form a coil at least 5 inches long.  
  - Slide the coil off the dowel and gently stretch it so the loops do not touch each other.  
  - Make two stacks of three neodymium magnets. Attach one stack to each end of the battery, ensuring they are oriented so they repel each other.  
  - Insert the battery with magnets (“train”) into the coil of wire.  
  - Observe as the train moves through the coil, propelled by the magnetic interaction.  
  - If the train does not move, flip its direction or adjust magnet orientation.  
  - Experiment with longer coils, more magnets, or circular tracks.



====Links==== 
How to Build an Electromagnetic Train | STEAM DIY - KiwiCo: 
{{youtube>Fd3O6sXBXqA?}}\\

Electro Magnetic Train Experiment (How to make a electro Magnetic Train?) - Kid's Fun Science: 
{{youtube>nsDvByxrwEo?}}\\

📄 Electromagnetic Train - KiwiCo: [[https://www.kiwico.com/diy/stem/motion-mechanics/electromagnetic-train?srsltid=AfmBOoqbQABrqtRFDJrVV5_PCojPBUOn7SI3juUYTMllTP6RYCpiMlJb]]\\


====Variations====
  * Create a circular coil track and watch the train run continuously.  
  * Compare trains using different numbers of magnets.  
  * Try different wire gauges to see how resistance affects motion.  
  * Test how coil length influences train speed and distance.



====Safety Precautions====
  * Use caution with neodymium magnets — they are strong, can pinch skin, and are very dangerous if swallowed.  
  * Do not use this with young children.  
  * The train creates a short circuit, which can quickly drain or overheat the battery — do not leave it running for long periods.  
  * Avoid contact of magnets with electronics, as they can cause damage.




====Questions to Consider====
  * How does electricity in the coil create a magnetic field? (A current through the wire generates a magnetic field around it.)  
  * Why does the train move forward instead of just sitting in place? (The coil’s magnetic field interacts with the battery’s magnets, producing a push.)  
  * What happens if you flip the battery and magnets around? (The direction of motion reverses.)  
  * Why does the battery eventually stop working? (The setup forms a short circuit, which quickly drains the battery.)  
  * How is this related to real-world electric motors and maglev trains? (Both rely on forces from interacting magnetic fields to create motion.)