Projects
Discoveries

Discovery of Batteries

  1. Zinc Copper cell (reduction-oxidation)
  2. How to Measure?
  3. Battery Meter (Galvanometer)
  4. How Many Turns?
  5. Electrolyte Test (pure water vs. vinegar)
  6. Reverse Electrodes (polarity)
  7. Electrolyte (strong acid test)
  8. Electrolyte (salt test)
  9. Electrode (distance test)
  10. Electrolyte (temperature test)
  11. Electrode (surface area test)
  12. Standard Cell
  13. How much electrolyte does a single cell need?
  14. What's Next?

What's Next?

Where is the rest?

More videos and experiments will be posted soon (approximately 3 weeks between updates).

How can I follow updates?

Subscribe to this Topic for updates.

Why post an incomplete lesson?

The user interactions (questions, answers, issues & ideas you share) help improve & shape the lessons, leading to a richer experience going forward.

What's Next?

Discuss the site

For general discussions about Khan Academy, visit our Reddit discussion page.


Flag inappropriate posts

Here are posts to avoid making. If you do encounter them, flag them for attention from our Guardians.

abuse
  • disrespectful or offensive
  • an advertisement
not helpful
  • low quality
  • not about the video topic
  • soliciting votes or seeking badges
  • a homework question
  • a duplicate answer
  • repeatedly making the same post
wrong category
  • a tip or feedback in Questions
  • a question in Tips & Feedback
  • an answer that should be its own question
about the site