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Alessandro volta is the scientist who made the first cell, that cell is called the voltaic cell, after his name. Take a pot of glass, fill it with water and add common salt in it to make a common salt solution. Now insert a copper and a zinc rod (electrodes) into it (make sure that they do not touch each other.) Now connect a 1.5 volt electric bulb or a LED through the two rods and pass the current. Does the bulb or LED light up? Now repeat the same activity by taking a plastic container and filling that with cow dung or mud from the field and inserting the same rods again.

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Yes, bulb starts to glow. 

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