descibe the construction working and usefulness of a dry cell with the help of a diagram
Answers
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.
A dry cell comprises of Zinc container whose base serves as the negative electrode.
The carbon rod is situated at the center with the brass cap which serves as positive electrode.
It is surrounded by means of manganese dioxide & charcoal in muslin bag.
The electrolyte employed in the moist plate of the ammonium chloride.
The external body of zinc container gets insulated with aid of cardboard.