Question

Draw circuit diagram showing a dry cell connected to a bulb through a switch a positive and negative terminal of the cell and the direction of flow of electronic current and conventional current

Answer 1

the electron always flow from negative termnal to positive terminal of the battery but we assume that it flows from positive to negative the reason behind it is convention.
We consider current direction as direction of conventional current that is from positive to negative as I shown in the figure.

Answer 2

A source of electrical current is known as a dry cell.

Explanation:

• It includes a paste of aluminium chloride inside a zinc container. Inside this paste, a cardboard container containing powdered manganese dioxide and carbon rod is placed.
• A dry cell includes a metal container wherein a low moisture electrolyte paste covers the graphite rod or a steel electrode.
• Generally, the metallic container could be zinc whose base acts as a negative electrode (anode) and a carbon road acts as a positive electrode (cathode).
• The electron  flow from negative terminal to positive terminal of the battery however we expect that it flows from positive to negative the reason is convention.
• We recall current route as route of conventional current this is from positive to negative as I shown in the image given below