World’s Easiest DIY Electric Train | Summary and Q&A

June 8, 2016
Physics Girl
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World’s Easiest DIY Electric Train


An individual creates a simple electric train using magnets, a copper coil, and a battery, showcasing various experiments and their outcomes.

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Key Insights

  • 🚂 The video demonstrates the simplicity and effectiveness of using magnets, a coil, and a battery to create an electric train model.
  • 🚄 Strong neodymium magnets can greatly enhance the speed and performance of the train.
  • 🔋 Different sizes of batteries and coils can be used to achieve varying outcomes.
  • 🚂 An understanding of the physics principles behind electrical and magnetic fields is necessary to comprehend the train's functionality.
  • 🚂 Experiments and modifications can be made to customize and improve the train's performance.
  • 💪 Safety precautions should be taken when handling strong magnets to avoid injury.
  • 🤗 The video showcases the fun and excitement of conducting hands-on physics experiments.


Welcome to my floor. I think this is the first video I have ever filmed on the floor. But desperate physics calls for desperate measures or something. So I found this video online of the coolest little contraption. It was called world's simplest electric train. I'll put the link in the description. And it was this little set up, a spring, a coil li... Read More

Questions & Answers

Q: How does the electric train work?

The train works by placing magnets on both ends of a battery, and then inserting the train into a copper coil. As the magnets and coils make contact, electrons flow through the coil, creating a magnetic field that propels the train forward.

Q: Why do the magnets need to be in a specific orientation?

In an electric field, negative charges are pushed in one direction, and positive charges in the opposite direction. Similarly, in a magnetic field, north and south poles are pushed in opposite directions. The specific orientation of the magnets ensures that the push from the magnetic field propels the train forward.

Q: How does the strength and size of the magnets affect the train's performance?

Stronger magnets, like neodymium magnets, create a stronger magnetic field, resulting in faster speeds for the train. Additionally, using larger magnets can increase the distance between the train and the coil, preventing them from sticking together due to their strong magnetic pull.

Q: Can different setups with varying battery and coil sizes be used?

Yes, different setups with different battery and coil sizes can be used. The content showcases experiments using AA batteries, quadruple A batteries, and different sizes of coils, with each setup yielding unique results in terms of speed and performance.

Summary & Key Takeaways

  • The content features an individual conducting experiments with a simple electric train made using magnets, a copper coil, and a battery.

  • The individual attempts to improve the train by using stronger neodymium magnets and creating longer tracks.

  • Different setups, including varying sizes of batteries and coils, are tested, resulting in different speeds and outcomes.

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