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The phosphoric acid in the banana causes a chemical reaction with the copper and zinc. The reaction causes the electrons on the copper to strip off and attach to the hydrogen atoms in the phosphoric acids. The new potential difference (amount of pressure or electrons in one place of a conductor) causes the electrons to flow into the zinc, powering the clock in a cycle.

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9y ago
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15y ago

It's natural battery energy helps power ti.

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12y ago

By taking aluminum wire and connect to apple, as it contain acid in it, it can generate some power for the clock.

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10y ago

Most any "juicy" fruit with sufficient dissolved cation/anion concentrations. Remember, the electrodes must impale the same specimen.

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Q: How do you power a clock with a fruit or vegetable?
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