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YouTubeMuseum of Science
Can 250 Coins Power an LED? Coin Battery Experiment
How many red, white and blue LEDs can you light up with 250 coins? In this episode of Everyday Awesome, Alex Dainis (@AlexDainisPhD) built a battery using 250 coins, electrolyte-soaked paper towels, and parafilm, generating an impressive 18 volts. But high voltage isn't everything. The long battery also had so much internal resistance that it ...
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