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Friday, 9 October

JEE Main 2022 · PhysicsNumerical answerNumerical valueEasyCalculation

JEE Main 24 June 2022, Shift 1, Physics Q53

Question 53 of 90 in this shift, Physics question 23 of 30, Section B.

A transistor is used in common-emitter mode in an amplifier circuit. When a signal of 10 mV is added to the base-emitter voltage, the base current changes by 10 μ10\ \muA and the collector current changes by 1.5 mA. The load resistance is 5 kΩ5\ \mathrm{k\Omega}. The voltage gain of the transistor will be ______.

Official answer

750

NTA final key (2022 Session 1).

Chapter
Semiconductor Electronics: Materials, Devices and Simple Circuits
Topic
Transistors
Idea tested
CE Amplifier Voltage Gain

Same idea in other shifts

Asked 3× in all
  1. 8 Apr 2023, Shift 2 · Q43For a given transistor amplifier circuit in CE configuration VCC=1V_{CC} = 1 V, RC=1R_C = 1 kΩ\Omega, Rb=100R_b = 100 kΩ\Omega and β=100\beta = 100.…EasySingle correctHas a figure
  2. 18 Mar 2021, Shift 1 · Q21An npn transistor operates as a common emitter amplifier with a power gain of 10610^6. The input circuit resistance is 100 Ω\Omega and the…MediumNumerical value

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 42 of the 174 JEE Main shifts held from 2017 to 2026.