A dry cell is a portable battery used in torches, transistor radio sets, calculators, digital watches, etc. as a source of electricity.
ITEMS REQUIRED:
One zinc plate 4”X2”-One carbon plate 4”X2”- Manganese dioxide- Starch powder- Ammonium chloride- Cotton wool- Copper wire- Two clips-One 1.5 volt bulb and one bulb holder
Take some water and mix starch in it. Boil the mixture till the starch forms thick paste. Mix sufficient quantity of manganese dioxide with the paste of starch, making a very thick paste of manganese dioxide. Take the zinc plate and uniformly spread the manganese dioxide paste over it. Take some cotton wool, spread it to the size of the zinc plate and soak it in the saturated solution of ammonium chloride. Put it over the layer of paste. Put another layer of manganese dioxide paste over it. Now, put a carbon plate on the above layer of manganese dioxide. Your dry cell is ready for use. Take two copper wires. Connect their two ends to two clips and other two ends to a bulb holder. Clip the zinc plate and carbon plate with the two clips separately. The electric current will flow through the bulb and the bulb will glow.
0 comments:
Post a Comment