Question # 1

The use of chips in electrons is described in the form of:

Choose an answer

Yellow boxes

Black boxes

Red boxes

White boxes

Orange boxes

Majority charge carriers in the p-region of p-n junction are:

Choose an answer

electrons

positrons

Holes

Neutrons

None of these

A hole in p-type my be due to:

Choose an answer

Trivalent impurity

Breking of some covalent bond

Pentavalent impurity

Germanium

Either (A) or (B)

A digital system deals with quantities which has discrete values:

Choose an answer

Two in number

One in number

Three in number

Four in number

None of these

A transistor has:

Choose an answer

One region

Two regions

Three regions

Four regions

None is correct

The electric field lines start from

Choose an answer

Positive charge

Negative charge

Either A or B

Neutron

An atom

A potential barrier of 0.7 V exists across p-n junction made from:

Choose an answer

Germanium

Silicon

Arsenic

Gallium

Indium

An LED emits light when it is:

Choose an answer

Forward biased

Reverse biased

Operated without battery

Operated with heat source

None of these

A potential barrier of 0.7V exists across p-n junction made from:

Choose an answer

Germanium

Silicon

Arsenic

Gallium

Indium

Silicon is one of the mot commonly used:

Choose an answer

onductor

Dielectric

Insulator

Semiconduction

Both (B) and (C)

In AND gate, the output is 1 if:

Choose an answer

Both inputs are 0

Both inputs are 1

Only one input is 0

Both (A) and (B)

Both (A) and (C)

Electric lines of force

Choose an answer

Intersect each other

Are always parallel

Are always anti-parallel

Never intersect

None of these

The SI unit of charge is

Choose an answer

Ampere

Watt

Coulomb

Volt

Joule

The intensity at a point due to a charge is inversely proportional to

Choose an answer

Amount of charge

Size of the charge

Distance between charge and the point

Square of the distance from the charge

None of these

Depletion region contains:

Choose an answer

Protons

Positive ions

Negative ions

Both (B) and (C)

Both (A) and (C)

More Classes

Other Links

ECAT Physics Chapter 18 Electronics Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer