Describe the construction, working and usefulness of a dry Cell, with

1.	Describe the construction, working and usefulness of a dry Cell, with the help of a diagram.
Answer» A dry cell consists of a zinc container whose base acts as the negative electrode. The CARBON rod placed at the centre with a brass cap acts as the POSITIVE electrode. This is surrounded by a mixture of MANGANESE dioxide and charcoal in a muslin BAG. The electrolyte uses is a moist paste of ammonium chloride. The outer body (excluding the base) of the zinc container is insulated with cardboard. When the dry cell is connected in a circuit comprising a bulb, current flows in the circuit due to the chemical reaction that takes place in the cell. This makes the bulb glow. The dry cell is a primary cell and it cannot be recharged.

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Describe the construction, working and usefulness of a dry Cell, with the help of a diagram.

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