What is the advantage of primary cell over secondary cell?

• A. Its internal resistance is low
• B. It is light and cheap
• C. It can provide low/high currents
• D. It is rechargeable

The primary cell has several advantages compared to secondary cells, particularly in specific applications. Here are some key points to consider:

Benefits of Primary Cells

• Cost-Effective: Primary cells are generally cheaper to produce, making them a budget-friendly option for many consumers.
• Lightweight: They tend to be lighter than secondary cells, which can be beneficial for portable devices.
• Low Internal Resistance: This characteristic allows primary cells to deliver power efficiently, especially in low-drain applications.
• Single Use: Designed for one-time use, they are ideal for devices that require a reliable power source without the need for recharging.

Comparison with Secondary Cells

While secondary cells can be recharged and provide versatility, primary cells excel in situations where long shelf life and immediate power are essential. Therefore, the correct answer to the question is:

B. It is light and cheap