Internal Resistance: Causes in Cells & Solar Cells

In summary, the internal resistance in a cell, such as a dry cell battery, is caused by the presence of conducting material and free electrons. On the other hand, the internal resistance in a solar cell is affected by the quantum mechanical behavior of electrons at the junction of two different semiconductor materials.
  • #1
Cheman
235
1
What causes internal resistance in the following:

A) A Cell,

B) A Solar Cell?

Is it not just the same thing? Thanks in advance. :smile:
 
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  • #2
Cheman said:
What causes internal resistance in the following:

A) A Cell,

B) A Solar Cell?

Is it not just the same thing? Thanks in advance. :smile:
I think the difference is that a dry cell battery, being made up of conducting material, whereas a solar cell is a semiconductor. There are free electrons in a conductor. The conductivity of the semiconductor depends on the quantum mechanical behaviour of electrons at the junction of two different semiconductor materials.

AM
 
  • #3


Internal resistance in cells and solar cells is caused by the resistance of the materials within the cell itself. This resistance can be due to various factors such as the conductivity of the materials, the thickness of the cell, and the presence of impurities or defects in the materials.

A) In a cell, the internal resistance is primarily caused by the resistance of the electrolyte solution and the electrodes. The electrolyte solution has a certain level of resistance due to its chemical composition and the movement of ions within it. The electrodes also have a resistance due to the materials they are made of and their physical structure.

B) In a solar cell, the internal resistance is mainly caused by the resistance of the semiconductor material used to convert sunlight into electricity. The semiconductors used in solar cells have a certain level of resistance due to their molecular structure and impurities within them. Additionally, the interconnections between the solar cells and the wiring used to connect the cells also contribute to the internal resistance.

While both cells and solar cells have internal resistance, the causes may differ slightly due to the different materials and structures used in each type of cell. However, the overall concept of internal resistance remains the same - it is the resistance within the cell itself that can affect its performance and efficiency.
 

Related to Internal Resistance: Causes in Cells & Solar Cells

1. What is internal resistance in cells and solar cells?

Internal resistance refers to the resistance that is present within a cell or solar cell due to the materials and components used in its construction. This resistance can affect the performance and efficiency of the cell.

2. What causes internal resistance in cells and solar cells?

Internal resistance in cells and solar cells can be caused by a variety of factors, including the materials used in the cell's construction, the temperature, and the age of the cell. Other factors such as impurities and defects can also contribute to internal resistance.

3. How does internal resistance affect the performance of cells and solar cells?

Internal resistance can have a negative impact on the performance of cells and solar cells. It can lead to energy losses and decrease the efficiency of the cell, resulting in lower power output. It can also cause the cell to heat up, which can further decrease its performance.

4. Can internal resistance be reduced in cells and solar cells?

While it is not possible to completely eliminate internal resistance, it can be reduced through various measures. These can include using materials with lower resistance, improving the design of the cell, and maintaining optimal operating conditions.

5. How can internal resistance be measured in cells and solar cells?

Internal resistance can be measured using various techniques, such as direct measurement with a multimeter or through specialized equipment designed for this purpose. The measurement can provide valuable information for identifying and addressing any issues with internal resistance in the cell.

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