Question 8 of 9beginner🔧 ApplyShort Answer5 marks

Visit an electrical items shop. With the help of the shopkeeper, identify the various types of cells available. For each cell, also find out which device(s) it is used for. Prepare a report.

Correct Answer

Expected findings from visiting an electrical items shop include various types of cells and their uses.

(1) AA (penlight) cells are used in torchlights, wall clocks, remote controls, toys, and radios. (2) AAA (triple A) cells are used in small electronic devices, remote controls, digital cameras, and small toys.

(3) D cells (large) are used in large torchlights, radios, and boom boxes. (4) C cells are used in medium-sized torchlights, toys, and radios.

(5) Button cells (coin cells) are used in watches, hearing aids, calculators, and small electronic devices. (6) 9V battery is used in smoke detectors, radios, and toys.

(7) Rechargeable batteries (Li-ion, NiMH) are used in mobile phones, laptops, cameras, and electric vehicles. (8) Car batteries (lead-acid) are used in automobiles for starting engines.

(9) Solar cells are used in solar panels for generating electricity from sunlight.

The report should include the cell type, voltage, size, common applications, and whether it is rechargeable or single-use.

Exercise: Exploratory Projects | Q: Project 3 | (Page Page 18)
For More Understanding

Explanation

The chapter mentions on page 18 that 'Electric cells or batteries are compact portable sources of electrical energy that make the use of some electrical devices more convenient. These cells and batteries come in various shapes and sizes for different purposes, such as cylindrical batteries for torchlights, clocks, remotes, toys; button cells for watches, hearing aids; rechargeable batteries for mobile phones, laptops, and electric vehicles.' This project helps students understand the practical applications of different types of cells.

Solution Steps

  1. Visit an electrical items shop and identify the various types of cells available with the shopkeeper's help

  2. Record details for each cell type: AA, AAA, D, C, button cells, 9V, rechargeable batteries, car batteries, and solar cells

  3. Note the common devices and applications each cell type is used for

  4. Include information about cell type, voltage, size, and whether rechargeable or single-use

  5. Prepare a comprehensive report documenting all findings

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