Home/
Competitive Exams/
JEE Main & Advanced/
Physics/
Semiconductors/
Question 20234
JEE Physics · Easy

Semiconductors: Transistor — Active Region MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

Timer-based practiceDetailed answer reviewMobile-friendly flow
Transistor — Active RegionEasyQuestion 20234

Question

For an n-p-n transistor in the active region:
  1. A
    Both junctions forward biased
  2. B
    Both junctions reverse biased
  3. C
    Emitter-base junction forward biased, base-collector reverse biased
    Correct
  4. D
    Emitter-base junction reverse biased, base-collector forward biased

Correct answer

Emitter-base junction forward biased, base-collector reverse biased

Explanation

Active mode: EB forward biased (electrons injected into thin base) + BC reverse biased (high field sweeps carriers to collector). Most injected electrons cross the base and are collected → I_C ≈ I_E >> I_B.

Review Semiconductors notesStart timed chapter practice