Dry Cell Battery Overview

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Questions and Answers

What is the role of the zinc vessel in a dry cell?

It serves as the negative electrode. (correct)
It provides insulation to the internal components.
It is a source of electrolyte for the cell.
It acts as the positive electrode.

What materials are constituents of the electrolyte paste in a dry cell?

Manganese dioxide and graphite powder.
Zinc oxide and water only.
Copper sulfate and ammonium chloride.
Ammonium chloride and carbon powder. (correct)

What generates the potential difference in a dry cell?

The barriers created by the insulated lid.
The interaction of water and manganese dioxide.
The chemical reaction between the zinc and the electrolyte. (correct)
The flow of electric current through the zinc vessel.

Which voltage is typically produced by a carbon-zinc dry cell?

<p>1.5 V (B)</p> Signup and view all the answers

Which application is not commonly associated with carbon-zinc dry cells?

<p>Electric cars (B)</p> Signup and view all the answers

Flashcards

Dry Cell

A type of battery that uses a dry paste electrolyte instead of a liquid solution.

Zinc Electrode (Dry Cell)

The negative electrode in a dry cell, typically made of zinc.

Carbon Electrode (Dry Cell)

The positive electrode in a dry cell, usually made of carbon.

Electrolyte Paste (Dry Cell)

A paste-like mixture containing ammonium chloride, zinc chloride, water, manganese dioxide, and carbon powder, which acts as the electrolyte in a dry cell.

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Voltage of a Dry Cell

The voltage produced by a single dry cell, typically around 1.5 volts.

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Study Notes

Dry Cell (Carbon-Zinc)

A dry cell is a type of battery using a dry medium.
The zinc vessel is the negative electrode.
A carbon rod inside acts as the positive electrode.
The electrolyte is a paste mixture of ammonium chloride, zinc chloride, water, manganese dioxide, and carbon powder.
The cell has an insulated lid to contain the components.
A potential difference of 1.5 V is generated by the chemical reaction.
Current flows when the cell's terminals are connected through an external resistance.
Common applications include flashlights, remote controls, cameras, and children's toys.