The electricity travels through these other cells because of the water and salt. These electrolytes act as an electrical conductor which means they allow the flow of electric charges. The reason has to do with the water in the potato. Electricity occurs when the number of protons or electrons in an atom are too high, causing the attraction to particles of the opposite charge. Potato batteries will only be effective when they won't eat into a critical food supply, and the places where potatoes are grown aren't necessarily the places that need potato power. A potato battery is a type of electrochemical cell.An electrochemical cell converts chemical energy into electrical energy. The negative side is the source of the electrons that gives the energy to a wire that is connected to an electronic device. Without water and salt combined to make electrolytes, a potato would not be acidic enough to conduct electricity. A battery is something that causes chemical energy to be converted into electricity.

The chemical reactions that take place between two dissimilar metals and the juices in the potato create a small amount of voltage that can power a very small electrical device [source: MadSci].Follow the instructions below to make a potato-powered light bulb. Generally, people know that the electricity that powers their homes come from power plants.

Batteries have a positive side (terminal) and the negative side (terminal). The chemical composition of the potato when combined with zinc in metals together with copper is what causes a reaction between the released positively charged and negatively charged ions of the potato resulting in the flow of electricity.

You can produce electricity with two metal strips and a tomato! At any science fair, you're almost guaranteed to see at least two go-to experiments: the clichéd papier-mâché volcano and the ever-popular pickle or potato battery. In the potato battery, there is a transfer of electrons between the zinc coating the galvanized nail that will be inserted into the potato and the copper wire that will be inserted another part of the potato. A potato has the potential to conduct electricity because it is a source filled with electrolytes. All water except chemically-pure distilled water will conduct electricity-- the more impurities, the faster it conducts. Every potato contains cells. These cells are in the form of water and salt, mentioned earlier, as well as the "meat" and skin of the potatoes. We only need a potato, a couple nails and a piece of wire to make a potato battery. In conclusion, potatoes do not directly produce electricity. The salt water will conduct current from a lightening strike hundreds of feet away. The liquid in a potato can act as the electrolyte and generate electricity between two electrodes. Hear the electricity crackle using a pair of headphones. As in the lemon battery the goal is to learn more about electricity, and possibly a few new science terms along the way. Electricity has become a necessity in many different aspects in a person’s life. The starch contained in the potato plant tuber is not only a food source.

The electric current is activated when two specific metallic objects, like a copper penny and a galvanized zinc nail, are inserted into the potato.

Make a Tomato Battery. This is why you must run right out of the water if you are swimming in a beach.