Question 1

What are electrons?

Accepted Answer

Tiny particles within atoms that carry electrical energy.

Answer

Plastic components in electronics.

Answer

Electric vehicles.

Answer

Small animals in circuits.

Question 2

What do resistors do in electronic circuits?

Accepted Answer

Restrict the flow of electrons and reduce the current or voltage by converting electrical energy into heat.

Answer

Store information.

Answer

Increase the flow of electrons.

Answer

Convert light into sound.

Question 3

What is the difference between analog and digital electronics?

Accepted Answer

Analog stores information in a continuous form, while digital stores information in numerical form.

Answer

Analog is only used in old devices, digital in modern ones.

Answer

Analog is less accurate than digital.

Answer

Analog uses no electricity, digital does.

Question 4

What is the purpose of diodes in electronic circuits?

Accepted Answer

Allow an electric current to flow through them in only one direction.

Answer

Increase the flow of electrons.

Answer

Block the flow of electrons.

Answer

Change color when an electric current passes through.

Question 5

How are electronic circuits arranged on a printed circuit board?

Accepted Answer

Using copper connecting tracks and holes to connect components together.

Answer

By using invisible connections.

Answer

With plastic building blocks.

Answer

By magnetic forces.

Question 6

What is the difference in storing information between analog and digital?

Accepted Answer

Analog stores information in a pattern of light and dark areas, while digital stores information as numbers.

Answer

Analog stores information in letters, digital in images.

Answer

Analog stores information in sounds, digital in smells.

Answer

Analog stores information in colors, digital in shapes.

Question 7

What do capacitors do in electronic circuits?

Accepted Answer

Consist of two conducting materials separated by an insulating material to transform electrical currents.

Answer

Generate light.

Answer

Change color.

Answer

Produce heat.

Question 8

What is the function of transistors in electronics?

Accepted Answer

Switch tiny electric currents on and off or amplify them.

Answer

Store information.

Answer

Create light.

Answer

Generate heat.

Question 9

What is the key difference between analog and digital signals?

Accepted Answer

Analog signals vary in a continuous manner, while digital signals are discrete and represented by numbers.

Answer

Digital signals are always loud.

Answer

Analog signals are faster.

Answer

Analog signals are invisible.

Question 10

How are integrated circuits made?

Accepted Answer

By creating electronic components in miniature form on the surface of silicon chips.

Answer

By melting metal.

Answer

By combining different materials.

Answer

By painting them onto paper.

Question 11

What is a diode's function in an electronic circuit?

Accepted Answer

Allow an electric current to flow in only one direction

Answer

Amplify electric currents

Answer

Reduce the flow of electrons

Answer

Store and process information

Question 12

What is the main difference between analog and digital electronics?

Accepted Answer

Analog electronics store information in a continuous pattern of light and dark areas while digital electronics store information as numbers

Answer

Digital electronics transmit signals wirelessly while analog electronics use cables

Answer

Analog electronics amplify signals while digital electronics reduce their amplitude

Answer

Analog electronics are smaller in size than digital electronics

Question 13

What is the function of a resistor in an electronic circuit?

Accepted Answer

Restrict the flow of electrons and convert electrical energy into heat

Answer

Switch electric currents on and off

Answer

Transform electrical currents into light

Answer

Generate tiny electric currents

Question 14

What do transistors do in electronic devices?

Accepted Answer

Switch tiny electric currents on and off or amplify them

Answer

Generate electric currents when light falls on them

Answer

Restrict the flow of electrons

Answer

Convert light into electricity

Question 15

How are electronic components arranged in modern electronic devices?

Accepted Answer

On printed circuit boards with copper connecting tracks

Answer

Connected with short lengths of copper cable

Answer

Arranged on plastic boards with metal connections

Answer

Embedded within a solid semiconductor material

Question 16

What is the difference between electricity and electronics?

Accepted Answer

Electricity is all about making electromagnetic energy flow around a circuit, while electronics involves controlling tiny electric currents around complex circuits.

Answer

Electricity is digital, and electronics is analog.

Answer

Both are the same.

Answer

Electricity flows in circuits, electronics works in open spaces.

Question 17

What do diodes do in electronic circuits?

Accepted Answer

Allow an electric current to flow through them in only one direction.

Answer

Amplify electric current.

Answer

Store electric current.

Answer

Block the flow of electric current.

Question 18

What do capacitors do in electronic circuits?

Accepted Answer

Consist of conducting materials separated by a non-conducting material, used for timing and transforming currents.

Answer

Store electric charge.

Answer

Block electric currents.

Answer

Amplify signals.

Question 19

What is the purpose of opto-electronic components?

Accepted Answer

Turning light into electricity or vice-versa.

Answer

Amplifying sound.

Answer

Generating heat.

Answer

Blocking light.

Question 20

What is the function of printed circuit boards in electronic devices?

Accepted Answer

They arrange electronic components systematically to form circuits.

Answer

Store data.

Answer

Regulate currents.

Answer

Amplify signals.

Question 21

Who developed the first general-purpose microprocessor?

Accepted Answer

Marcian Edward (Ted) Hoff and Federico Faggin.

Answer

Lee De Forest.

Answer

John Ambrose Fleming.

Answer

Thomas Edison.

Question 22

What is the name of the American inventor who developed the improved valve known as the triode?

Accepted Answer

Lee De Forest

Answer

Jack Kilby

Answer

John Bardeen

Answer

Thomas Edison

Question 23

Which group of American scientists developed the transistor in 1947 at Bell Laboratories?

Accepted Answer

John Bardeen, Walter Brattain, William Shockley

Answer

Theodore Fulton, Gerald Dolan

Answer

Jack Kilby, Robert Noyce

Answer

Marcian Edward Hoff, Federico Faggin

Question 24

Who developed the world's first general-purpose microprocessor, the Intel 4004, in 1971?

Accepted Answer

Marcian Edward Hoff, Federico Faggin

Answer

Lee De Forest

Answer

Jack Kilby, Robert Noyce

Answer

Theodore Fulton, Gerald Dolan

Question 25

What is the name of the new kind of magnetic circuit component that works like a resistor with a memory, developed by Stanley Williams in 2008?

Accepted Answer

memristor

Answer

diode

Answer

transistor

Answer

capacitor

Question 26

Who discovered that electrons were negatively charged particles at Cambridge University in 1897?

Accepted Answer

J J Thomson

Answer

Sir William Crookes

Answer

George Johnstone Stoney

Answer

George R. Carey

Question 27

What is a common method for arranging electronic components systematically on a board?

Accepted Answer

printed circuit board

Answer

copper board

Answer

breadboard

Answer

component matrix

Question 28

What American scientist developed the first single-electron transistor in 1987?

Accepted Answer

Theodore Fulton.

Answer

John Bardeen

Answer

Jack Kilby

Answer

Lee De Forest

Question 29

What did Jack Kilby and Robert Noyce develop in the late 1950s?

Accepted Answer

Integrated circuits.

Answer

Printed circuit boards

Answer

Transistors

Answer

Resistors

Question 30

What kind of signals do modern digital radios use?

Accepted Answer

Digital signals.

Answer

Infrared signals

Answer

Hybrid signals

Answer

Analog signals

Question 31

What is the key to an electronic device?

Accepted Answer

The way components are arranged in circuits.

Answer

The color of the components

Answer

The material of the components

Answer

The size of the components

Question 32

What do diodes allow an electric current to flow through?

Accepted Answer

In only one direction.

Answer

In random directions

Answer

In both directions

Answer

In no direction

Question 33

What is one of the greatest things people learned to do in the 20th century?

Accepted Answer

Use electrons to control machines and process information.

Answer

Create the printing press

Answer

Invent the microwave oven

Answer

Control machines with magnets

Question 34

What are the two very different ways of storing information?

Accepted Answer

Analog and digital.

Answer

Horizontal and vertical

Answer

Paper and plastic

Answer

Black and white

Question 35

What did John Bardeen, Walter Brattain, and William Shockley develop in 1947?

Accepted Answer

The transistor.

Answer

The diode

Answer

The radio

Answer

The integrated circuit

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