Helmenstine holds a Ph. She has taught science courses at the high school, college, and graduate levels. Facebook Facebook Twitter Twitter. Featured Video. Cite this Article Format. Helmenstine, Anne Marie, Ph. How to Make a Fruit Battery. Experimental Determination of Avogadro's Number.
The Science Behind Firecrackers and Sparklers. Kirchhoff's Laws for Current and Voltage. The Properties and Uses of Zinc Metal. Find the Anode and Cathode of a Galvanic Cell. Your Privacy Rights. You'll need two types of metals for the positive and negative poles. You can purchase zinc and copper electrodes, but it's also interesting to try other household materials such as a galvanized screw and a piece of copper wire.
You'll also need a wire to act as the conductor, and alligator clips are helpful for connecting the wire to the positive and negative poles. To measure your results, have a small LED light to hook up to the conductor or use a meter to measure the voltage. With a variety of fruits on hand, try inserting the positive and negative poles and hooking up the conductor. See what fruits conduct the most electricity this is where a meter would come in handy. Some items to try include lemons, oranges, limes, apples, potatoes, tomatoes, and glasses of fruit juice.
Have kids form hypotheses before setting up the batteries. Then they'll get to guess which fruits or vegetables will produce the most electricity and see if their original thoughts were correct. A native Midwesterner, Maggie Vink has been writing for more than 15 years. She studied journalism at Oakland University and health information technology at Davenport University.
Can Fruits Make Electricity? Things You'll Need. The most acidic fruits are lemons, limes, plums, grapes, grapefruits and blueberries. Pineapples, oranges, peaches and tomatoes are also high in acid. It would be a mistake to remove these from our diet — after all, they are really nutritious and our body needs them. If you connected two lemons together, you can power an inexpensive digital watch uses about 1.
Use a length of thin, flexible wire to connect the silver wire of one lemon to the copper wire of the other lemon. Yes, technically, but not a very strong one! The source of electric energy in this demonstration is the combination of copper and zinc strips in the citric acid of the lemon. Moving electrons are called an electric current, which is what lights up the bulb.
The acidity of citrus fruit juice acts as an electrolyte that conducts electricity. Citrus fruits such as oranges, grapefruits, limes and lemons have high acidity levels. Electrical power increases as you connect more fruits. They do conduct electricity, but they do it too well. Melons — Watermelon, cantaloupe and honeydew are all low-acid fruits that are among the best foods for acid reflux. Oatmeal — Filling, hearty and healthy, this comforting breakfast standard also works for lunch.
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