Question

Consider the following statements A and B and identify the correct answer:

A. For a solar-cell, the I-V characteristics lies in the IV quadrant of the given graph.
B. In a reverse biased pn junction diode, the current measured in (µA), is due to majority charge carriers.

• A. A is correct but B is incorrect
• B. A is incorrect but B is correct
• C. Both A and B are correct
• D. Both A and B are incorrect

Answer 1

The Correct Option is A

Step 1: Analyze Statement A 

For a solar cell, the I − V characteristics lie in the fourth quadrant because it operates by converting light energy into electrical energy, generating current in the process. This makes Statement A correct.

Step 2: Analyze Statement B

In a reverse-biased pn-junction diode, the current (leakage current) is due to minority carriers, not majority carriers. Hence, Statement B is incorrect.

Step 3: Conclusion

Statement A is correct, but Statement B is incorrect.

Answer 2

For statement A regarding the solar-cell and its I-V characteristics, a solar cell typically operates in the fourth quadrant of the I-V graph. In this quadrant, the voltage is positive, and the current flows out of the cell, implying that the cell is generating power. Therefore, statement A is correct.
Now, for statement B concerning a reverse-biased pn junction diode, it's important to understand that when a diode is reverse-biased, a small current still flows due to the minority charge carriers, not the majority charge carriers. The current, usually in the range of microamperes (µA), is known as the reverse saturation current and is primarily due to minority carriers. Thus, statement B is incorrect.
Conclusively, the correct identification of the statements is: A is correct but B is incorrect.