How do you make a battery out of common household items?
You need one or more beakers or glasses with water in which you put some acid (such as lemon or vinegar), you also need two strips, or nails, made of different metals, for each glass. The more glasses (“cells”), the more powerful your battery. You can experiment with using copper and iron (or steel) nail, a silver plated spoon with a steel nail, the carbon of a pencil along with a copper nail, and so on. Put a pair of (different) metal strips in each glass and line them up in a row so that opposite metals are closest, like this: (A,B), (A,B),(A,B),…,(A,B) . Then connect them with conducting wires: B of the first cell to A of the second, B of the second to A of the third, and so on. Finally connect A of the first cell and B of the last cell to a small light bulb of a flash light, or light emitting diode (LED) (If the LED doesn’t work right away, reverse its connections). Test in the dark if the light glows dimly, and add more “cells” if needed, or increase the concentration of lemon j
