Duracell batteries, like many other types of alkaline and zinc-carbon cells, contain three major components: an anode, a cathode and an electrolyte. The anode is a mixture of powdered zinc and potassium hydroxide, the la... More » Science Physics Electricity

According to the MIT School of Engineering, a battery provides an electrical charge due to the chemical reactions that take place inside it once it is connected into an electrical circuit. When a circuit connects the pos... More » Science Physics Electricity

A lemon battery uses the juice inside the lemon as an electrolyte to facilitate electrons moving between a pair of electrodes inserted into the fruit. These need to be two dissimilar metals, such as a copper penny and zi... More » Science Physics Electricity
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An electrical battery must have three parts to function correctly: the positive cathode, the negative anode and an electrolyte. The anode and cathode are connected to a circuit to provide a charge. More » Science Physics Electricity