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Science Photo Libra/Getty Images hide caption toggle caption Science Photo Libra/Getty Images Electrical circuit with lemons. A chemical reaction between the copper and zinc plates and the citric acid produces a small current, that is able to power a light bulb. Science Photo Libra/Getty Images We re going Back To School today, revisiting a classic at-home experiment that turns lemons into batteries powerful enough to turn on a clock or a small lightbulb. But how does the science driving the lemon battery show up in those household batteries we use daily? Short Wave host Maddie Sofia and reporter Emily Kwong speak with environmental engineer Jenelle Fortunato about the fundamentals of electric currents and the inner workings of batteries.

Christopher gorskiJenelle fortunatoEmily kwongPenn state college of engineeringCarolina state universityScience photoGetty imagesMaddie sofiaNorth carolina state universityPenn statePenn state collegeகிறிஸ்டோபர் கோர்ஸ்கிஜெனெல்லே அதிர்ஷ்டம்எமிலி க்குவோங்பென் நிலை கல்லூரி ஆஃப் பொறியியல்கரோலினா நிலை பல்கலைக்கழகம்