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Lemon Battery: Where Does the Voltage Come From? | Kids’ Science Song

◷ 1:55

Does a lemon contain ready-made electricity? This upbeat song shows how lemon juice acts as an electrolyte while separate zinc and copper electrodes take part in a chemical reaction. Connect the leads and a multimeter reveals the small voltage as a number. Try it only with adult help.

Concepts explained

Concept glossary ↗

Original explanations based on the cited sources.

Electricity

Electric current is a directed flow of electric charge. Electrons carry it in metal wires, while ions can carry it in solutions.

Sources

Batteries and cells

An electrochemical cell turns energy from chemical reactions into electrical energy. A battery can contain one or more cells and power a closed circuit.

Sources

Text from the recording’s subtitles.

Song lyrics
Czy cytryna chowa gotowy prąd? Nie! Sok, cynk i miedź uruchamiają reakcję! Dorosły lekko roluje cytrynę Wkłada cynk i miedź do tego samego soku Są blisko, ale nie mogą się stykać! Sok to elektrolit: w nim wędrują jony Dzięki temu zachodzi reakcja chemiczna W cytrynie nie ma gotowego prądu Sok, cynk i miedź tworzą proste ogniwo Reakcja daje małe napięcie Na multimetrze widać małą liczbę Dorosły dopina dwa krokodylki Przewody łączą metale z miernikiem Czekamy chwilę, ekran odpowiada I wreszcie widzimy na nim małą liczbę W cytrynie nie ma gotowego prądu Sok, cynk i miedź tworzą proste ogniwo Reakcja daje małe napięcie Na multimetrze widać małą liczbę Czy oba metale są takie same? Nie, cynk i miedź są różne! Czy elektrody mogą się dotykać? Nie, w soku stoją osobno! Co pokaże nam multimetr? Pokazuje małe napięcie jako liczbę! W cytrynie nie ma gotowego prądu Sok, cynk i miedź tworzą proste ogniwo Reakcja daje małe napięcie Na multimetrze widać małą liczbę To nie magia — to małe ogniwo!
Language version lyrics
Is ready current hiding in this lemon? No! Juice, zinc, and copper start a reaction! An adult gently rolls it on the counter Then puts zinc and copper in the same juice Close together, but they must never touch! The juice is an electrolyte; ions move in it That helps the chemical reaction take place No ready current hides inside the lemon Juice, zinc, and copper make a simple cell The reaction produces a small voltage The multimeter shows it as a number An adult clips two leads onto the metals The wires connect them to the multimeter We hold our breath; the display starts to change Then a little number comes into view No ready current hides inside the lemon Juice, zinc, and copper make a simple cell The reaction produces a small voltage The multimeter shows it as a number Are the two metals the same? No, zinc and copper are different! Can the two electrodes touch? No, keep them separate in the juice! What will the multimeter show? A small voltage, shown as a number! No ready current hides inside the lemon Juice, zinc, and copper make a simple cell The reaction produces a small voltage The multimeter shows it as a number Not magic—just a little lemon cell!
Open on YouTube ↗
2:34
Audio language: EnglishSongs

The Lemon Secret | Invisible Ink Science Song for Kids

Follow a lemon-juice treasure map as its dried lines become almost invisible, then turn brown with careful warming. This catchy science song explains that the juice marks remain on the paper and change with heat. Only an adult handles the iron while the child watches from a safe distance.

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How Does a TV Make a Fish Move? A Kids’ Song

Maja turns on the TV and wonders how a fish can swim across the screen—and where its splash comes from. This song explores how a signal guides pixels and speakers, how changing still pictures appear to move, and how a vibrating speaker moves the air to make sound.

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