﻿ A transistor has three impurity regions. All the three regions have different doping levels. In order of increasing doping level, the regions are : : Kaysons Education

# A Transistor Has Three Impurity Regions. All The Three Regions Have Different Doping Levels. In Order Of Increasing Doping Level, The Regions Are :

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## Question

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Correct option is

Base, collector and emitter

Base, collector and emitter

Testing

#### SIMILAR QUESTIONS

Q1

In a common-base amplifier the load-resistance of the output circuit is  and the resistance of the input circuit is . If current-gain be 0.95, calculate the voltage-gain and the power gain.

Q2

In input and output resistances in a common-base amplifier circuit are  respectively. If the current-gain  is 0.98, then find the voltage gain. If the emitter-current is 2 mA, then find the collector-current and the base-current.

Q3

The a-c current gain  of a transistor is 150. What will be the change in the collector-current for a change of  in its base-current? What will be the change in the emitter-current?

Q4

Find the voltage gain and power gain in a transistor amplifier in common-emitter configuration when  and the input and the output ersistance are .

Q5

The input resistance of a silicon transistor is . Its base-current is changed by  which results in a change of 2 mA in the collector-current. The transistor is used as a common-emitter amplifier with a load resistance of . What is the voltage gain of the amplifier? Also calculate the transconductance of the transistor.

Q6

A change of 0.2 mA in base-current causes a change of 5 mA in the collector-current for a common-emitter amplifier. Find the a-c current gain of the transistor.

Q7

In an n-p-n transistor, 1010 electrons enter the emitter in 10–6 s. 2% of the electrons are lost in the base. Calculate the current transfer ratio and the current amplification factor. Charge on electron is .

Q8

A transistor is connected in common-emitter configuration. The collector-supply is 8 V and the voltage drop across a resistor of  in the collector circuit is 0.5 V. If the current-gain factor  is 0.96, find the base-current.

Q9

p-n-p transistor is used in common-emitter mode in an amplifier circuit. A change of  in the base-current brings a change of 2 mA in collector-current and of 0.04 V in base-emitter voltage. Find the input resistance  and the base-current amplification factor . If a load resistance of  is used, then find the voltage-gain of the amplifier.

Q10

When the emitter current of a transistor is changed by 1 mA, its collector current of a transistor is changed by 0.990 mA. The common base circuit current gain for the transistor is :