Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app

JEE Main 202118 MarchMorning Shift

Exam: JEE Main
Year: 2021
Date: 18 March
Shift: Morning Shift
Subject: Physics
Chapter: Semiconductors

JEE Main 2021 · 18 March · Morning Shift · Physics · Semiconductors

An npn transistor operates as a common emitter amplifier with a...

An

npn

transistor operates as a common emitter amplifier with a power gain of

{10}^{6} .

The input circuit resistance is

100Ω

and the output load resistance is

10kΩ .

The common emitter
current gain

\beta

will be (Round off to the Nearest Integer)

Correct answer

0

Step-by-step solution

{10}^{6} = {\beta}^{2} \times \dfrac{{R}_{0}}{{R}_{i}}

{10}^{6} = {\beta}^{2} \times \dfrac{{10}^{4}}{{10}^{2}}

{\beta}^{2} = {10}^{4} ⇒ \beta = 100

Practice Semiconductors on Quantrex Academy →

More from Semiconductors

The output Y for the given inputs A and B to the circuit is: JEE Main 2026 Refer to the logic circuit given below. For two inputs (A=1, B=1) and (A=0, B=1) , output… JEE Main 2026 The maximum rated power of the LED is 2 mW and it is used in the circuit with input… JEE Main 2026 In a semiconductor p-n diode, the doping concentrations on p-side and n-side are 10^ 15… JEE Main 2026 For the given logic circuit, which of the following inputs combination will make both LED… JEE Main 2026 Given below are two statements: one is labelled as Assertion A and the other is labelled… JEE Main 2026 A diode has Zener voltage of 10 V and maximum power dissipation of 0.5 W, then the… JEE Main 2026 Two 4 bits binary numbers, A = 1101 and B = 1010 are given in the inputs of a logic… JEE Main 2026 Full Semiconductors list All JEE Main PYQs