Podcast
Questions and Answers
What acts as the positive pole in a dry cell?
What acts as the positive pole in a dry cell?
A dry cell has a potential difference of 1.5 volts.
A dry cell has a potential difference of 1.5 volts.
True
What are some common uses of carbon-zinc cells?
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.
The electrolyte paste in a dry cell is made of ammonium chloride, zinc chloride, water, manganese dioxide, and _____ powder.
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Match the components of a dry cell with their roles:
Match the components of a dry cell with their roles:
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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.
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Description
This quiz covers the fundamental concepts of dry cells, specifically the carbon-zinc type. It explores the components of the cell, including the electrodes and electrolyte paste, as well as its applications in everyday devices. Test your knowledge on how this electrochemical cell functions and its practical uses.
