Dry Cell (Carbon-Zinc) Overview

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Questions and Answers

What acts as the positive pole in a dry cell?

Zinc vessel
Carbon bar (correct)
Insulated lid
Electrolyte paste

A dry cell has a potential difference of 1.5 volts.

True (A)

What are some common uses of carbon-zinc cells?

Torches, remote controls, cameras, electric children's toys

The electrolyte paste in a dry cell is made of ammonium chloride, zinc chloride, water, manganese dioxide, and _____ powder.

<p>carbon</p> Signup and view all the answers

Match the components of a dry cell with their roles:

<p>Zinc vessel = Negative pole Carbon bar = Positive pole Electrolyte paste = Medium for reaction Insulated lid = Seals the cell</p> Signup and view all the answers

Flashcards

Dry Cell

A type of battery that uses a dry paste as its electrolyte, rather than a liquid.

Zinc in a Dry Cell

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

Carbon Rod in a Dry Cell

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

Electrolyte Paste in a Dry Cell

A mixture of chemicals such as ammonium chloride, zinc chloride, water, manganese dioxide, and carbon powder that allows electric current to flow in a dry cell.

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Voltage of a Dry Cell

The amount of electrical potential difference between the positive and negative terminals of a dry cell, typically 1.5 volts.

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Study Notes

Dry Cell (Carbon-Zinc)

A dry cell is a type of electrochemical cell with a dry medium.
The cell comprises a zinc vessel that functions as the negative electrode.
A carbon rod serves as the positive electrode, immersed in an electrolyte paste.
The electrolyte paste is a mixture of ammonium chloride, zinc chloride, water, manganese dioxide, and carbon powder.
The cell is sealed with an insulated lid.
A potential difference of approximately 1.5 V is generated by chemical reactions within the cell.
Connecting the cell's terminals to an external load (via sufficient resistance) allows electric current flow.
Common applications include flashlights, remote control units, cameras, and children's electronic toys.