Question

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Answer 1

Answer:

write 5 drawbacks of using dry cell

Explanation:

Advantages of a dry cell are:

1. The compact size of a dry cell makes it suitable for powering small electronic devices.(toys, flashlights, portable radios, cameras, hearing aids)

2. The electrolyte used in dry cell is relatively not so harmful to the environment.

3. Dry cells are inexpensive.

Disadvantages of a dry cell are:

1. The main disadvantage of a dry cell is that it cannot be recharged once it loses its electrical power.

Answer 2

Answer:

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Explanation:

Drawbacks of using Dry Cell

Dry cell batteries are the most common type of battery in the market today. Dry cells are made up of stacks of metal plates with alternating charges with electrolyte paste or gel between them to conduct the electrical charge. It has many advantages and also a few disadvantages. Some of the disadvantages are as follows :

Cost

There are two types of dry cells as follows: primary cell and the secondary cell. A primary cell can only be used for a one time use. Once the primary cell is exhausted, the only thing to do with them is to throw them away. Secondary cells are rechargeable batteries. Once their initial charge is exhausted, the electric charge can be restored by recharging it. Primary cells need to be constantly replaced, making them cheap upfront but expensive over time. Secondary cells, on the other hand, maybe expensive upfront but last longer over time.

Environmental Risks

When dry cell batteries are dumped into the landfill, they have several negative effects on the environment. These discarded batteries pose a great threat to animals as they mistake them to be food and consume them impacting their health. The chemicals in the dry cell poison the ground and get into the water table making the water unsafe to drink.

Health Risks

If the chemicals inside the battery are exposed to too much heat, dry cell batteries can rupture and explode. These chemicals are highly acidic to the skin.

Advantages of Dry Cell

• A dry cell is a portable battery. It has its electrolyte in a paste form. A common type of dry cell is a zinc-carbon dry cell. It uses ammonium chloride electrolyte in paste form. This avoids spillage or leakage of electrolyte from the cell. It can also be oriented in any direction, so this can be considered as one of the most important advantages of a dry cell.
• Dry cells have high energy density or power stored to weight ratio. So they are of compact size which makes them easy to carry around which makes them one of the most common types of batteries found everywhere.
• The comparatively lower hazardous effect on the environment.
• Easy availability of dry cells.
• Dry cells are cheap compared to other cells.

Some Additional Information

Dry cell battery converts chemical energy into electrical energy. A dry cell was developed by Carl Gassner in 1886. There are two types of dry cells:

1. Primary

2. Secondary

Primary cells are those which cannot be recharged. Secondary cells are those which can be recharged and reused.

Examples of primary dry cells are zinc carbon cell, alkaline cell, lithium cell, mercury cell, silver oxide cell.

Examples of secondary dry cells are nickel-cadmium cell, lithium-ion cell, nickel-metal hydride cell.