Question

The active junction area in a solar cell is as we want power (A) small, more (B) small, small (C) large, more (D) large, small

Short answer

The correct answer is (C) large, more, as a larger active junction area in a solar cell allows for more sunlight absorption and leads to increased power generation.

Step-by-step solution

Understand the solar cell's active junction area

A solar cell works by converting sunlight into electricity. The active junction area in a solar cell is the region where the sunlight interacts with the solar cell material, generating electricity. The size of this active region is important because it determines the amount of sunlight that can be absorbed and ultimately impacts the power generated by the solar cell. Hence, to answer the given question, we need to understand the relationship between the junction area's size and the power generation capacity of a solar cell.

Relationship between active junction area and power generation

A larger active junction area allows a solar cell to absorb more sunlight, which results in more electrons being excited, and consequently, more electricity generated. This means that if we want more power from a solar cell, we need a larger active junction area. From the given options, we can now identify the correct choice: (A) small, more --> Incorrect because a small area will not generate more power. (B) small, small --> Incorrect because a small area will only generate a small amount of power. (C) large, more --> Correct as a large area will generate more power. (D) large, small --> Incorrect because a large area will not generate only a small amount of power. Therefore, the correct answer is: (C) large, more