CUET · PHYSICS · PYQ PAPER 2025
Out of the following statements, which statements explain the difference between forward biasing and reverse biasing in a p-n junction correctly?
| Forward biasing in a p-n junction | Reverse biasing in a p-n junction |
| (A) p-side is connected to the +ve terminal and n-side to the -ve terminal of the battery. | p-side is connected to the -ve terminal and n-side to the +ve terminal of the battery. |
| (B) Depletion layer becomes thicker. | Depletion layer becomes thin. |
| (C) Resistance across the p-n junction increases. | Resistance across the p-n junction decreases. |
| (D) the current is due to majority charge carriers. | the current is due to minority charge carriers. |
- A (A), (B) and (D) only
- B (B) and (D) only
- C (A) and (D) only
- D (B), (C) and (D) only
Answer & Solution
Correct Answer
(C) (A) and (D) only
Step-by-step Solution
Detailed explanation
(A) is correct: p-side to +ve, n-side to -ve for forward bias; p-side to -ve, n-side to +ve for reverse bias. (B) is incorrect: Depletion layer becomes thin in forward bias and thick in reverse bias. (C) is incorrect: Resistance decreases in forward bias and increases in reverse…
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