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JEE Main 2021 · PhysicsMultiple choiceSingle correctEasyRecall

JEE Main 27 August 2021, Shift 1, Physics Q20

Question 20 of 90 in this shift, Physics question 20 of 30, Section A.

For a transistor in CE mode to be used as an amplifier, it must be operated in :

(1)Cut-off region only
(2)Saturation region only
(3)Both cut-off and Saturation
(4)The active region onlyOfficial answer

Official answer

Option 4

NTA final key.

Chapter: Semiconductor Electronics: Materials, Devices and Simple Circuits
Topic: Transistors
Idea tested: Transistor Biasing and Structure

Same idea in other shifts

Asked 2× in all

24 Feb 2021, Shift 2 · Q19Given below are two statements : Statement I : PN junction diodes can be used to function as transistor, simply by connecting two diodes,…EasyTwo statements

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.