CUET · PHYSICS · PYQ PAPER 2025
Which of the following statements are correct?
(A) The current under reverse bias is essentially voltage dependent on a critical reverse bias voltage.
(B) The diode gets destroyed due to overheating if the forward or reverse current exceeds the rated value.
(C) In forward bias measurement, we use a milliammeter since the expected current is large, while a microammeter is used in reverse bias to measure the current.
(D) The drift current is of the order of a few \( \mu \)A
Choose the correct answer from the options given below:
- A (A), (B) and (D) only
- B (A), (B) and (C) only
- C (A), (B), (C) and (D)
- D (B), (C) and (D) only
Answer & Solution
Correct Answer
(D) (B), (C) and (D) only
Step-by-step Solution
Detailed explanation
(A) Incorrect : In a p-n junction diode under reverse bias, the current (reverse saturation current) is essentially independent of the applied voltage until it reaches the critical breakdown voltage (\(V_{b r}\)). It depends primarily on the concentration of minority carriers…
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