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JEE PHYSICS MCQ: SEMI CONDUCTOR DEVICES
1
Medium
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Understanding
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Consider the following statements (A) and (B) and identify the correct answer.
(A) Zener diode can be used as voltage regulator.
(B) In unbiased p-n junction, at thermal equilibrium, drift current is equal to diffusion current.
(A) Zener diode can be used as voltage regulator.
(B) In unbiased p-n junction, at thermal equilibrium, drift current is equal to diffusion current.
View answer and explanation
Correct option: B
Both A and B are correct
Option B (Both A and B are correct) is correct because a Zener diode maintains a constant voltage in reverse breakdown and in an unbiased p-n junction, the drift and diffusion currents are equal at thermal equilibrium.
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