Electronic component identification

Question 1

This is a battery. What does it do?

Answer 1

A battery is a collection of cells, used to provide power to a circuit.

Question 2

Name the component.

Answer 2

Battery

Question 3

Name the component.

Answer 3

Battery

Question 4

This is a variable resistor. What does it do?

Answer 4

A Variable Resistor is a resistor whose resistance can be changed. It can be used to control the current in a circuit.

Question 5

Name the component.

Answer 5

Variable Resistor

Question 6

Name the component

Answer 6

Ammeter

Question 7

Name the component

Answer 7

PNP Transistor

Question 8

This is a PNP Transistor. What does it do?

Answer 8

A PNP Transistor is an electronic switch. It can be used as part of an amplifier to boost the power of an output device.

Question 9

Name the component

Answer 9

PNP Transistor

Question 10

This is an ammeter. What is it used for?

Answer 10

An ammeter is measuring instrument used to measure the electric current in a circuit.

Question 11

Name the component

Answer 11

Ammeter

Question 12

Name the component

Answer 12

Antenna

Question 13

This is an antenna. What does it do?

Answer 13

An antenna converts electrical signal into radio waves and vice versa.

Question 14

Name the component

Answer 14

Bell

Question 15

This is a bell.

Answer 15

A bell is an electrical signalling device.

Question 16

This is a buzzer. What does it do?

Answer 16

A buzzer turns electricity into sound. It makes simple buzzing noises only.

Question 17

Name the component

Answer 17

Buzzer

Question 18

This is a capacitor. What does it do?

Answer 18

A capacitor is used to store charge. It can be used in conjunction with a resistor to provide a simple timing circuit.

Question 19

Name the component

Answer 19

Capacitor

Question 20

Name the component

Answer 20

Polarised Capacitor

Question 21

Name the component

Answer 21

Capacitor

Question 22

This is the symbol for an earthing point in a circuit. What is an earth?

Answer 22

It is a connection to the ground or earth in a circuit. This can be for several reasons such as to protect the user if the circuit insulation failed.

Question 23

Name the symbol

Answer 23

Earth

Question 24

This is a fuse. What does it do?

Answer 24

A fuse is a special type of resistor that will burn out if the current goes above its rated level. It is used to protect circuits from too much current.

Question 25

Name the component.

Answer 25

Fuse

Question 26

Name the component.

Answer 26

Fuse

Question 27

Name the component

Answer 27

Heating Element

Question 28

This is a **lamp.** What does it do?

Answer 28

A **lamp** turns electricity into light.

Question 29

Name the component

Answer 29

Lamp/Bulb

Question 30

Name the component

Answer 30

Lamp

Question 31

This is a **Light Dependant Resistor (LDR)**. What does it do?

Answer 31

A **Light Dependant Resistor (LDR)** is used for sensing light. It is a type of resistor where the resistance increases as the amount of light increases.

Question 32

Name the component

Answer 32

Light Dependant Resistor (LDR)

Question 33

Name the component

Answer 33

Light Dependant Resistor (LDR)

Question 34

This is a **Light Emitting Diode (LED)**. What does it do?

Answer 34

A **Light Emitting Diode (LED)** converts electricity to light and only allows the electricity to pass through one way. It uses much less electricity than a bulb.

Question 35

Name the component

Answer 35

Light Emitting Diode (LED)

Question 36

Name the component

Answer 36

Light Emitting Diode (LED)

Question 37

Name the component

Answer 37

Microphone

Question 38

This is a **loudspeaker**. What does it do?

Answer 38

A **loudspeaker** turns electricity into sound.

Question 39

Name the component

Answer 39

Loudspeaker

Question 40

Name the component

Answer 40

Loudspeaker

Question 41

This is a **motor**. What does it do?

Answer 41

A **motor** turns electricity into circular movement.

Question 42

Name the component

Answer 42

Motor

Question 43

Name the component

Answer 43

Motor

Question 44

Name the component

Answer 44

Photodiode

Question 45

Name the component

Answer 45

PNP Phototransistor

Question 46

Name the component

Answer 46

Polarised Capacitor

Question 47

Name the component

Answer 47

Potentiometer with moveable contact

Question 48

Name the component

Answer 48

Potentiometer with moveable contact

Question 49

This is a **potentiometer**. What does it do?

Answer 49

A **potentiometer** is a 3 terminal resistor. If only 2 terminals are used it acts as a variable resistor. If all 3 are used it acts as a **voltage divider**. It is often used as a volume control. Also known as a **pot**.

Question 50

This is a **resistor**. What does it do?

Answer 50

A **resistor** can be used to control the amount of current in a circuit or to protect other components.

Question 51

Name the component

Answer 51

Resistor

Question 52

Name the component

Answer 52

Resistor

Question 53

Name the component

Answer 53

Semi Conductor Diode

Question 54

Name the component

Answer 54

Semi Conductor Diode

Question 55

Name the component

Answer 55

Switch

Question 56

Name the component.

Answer 56

A **thyristor**.

Question 57

This is a **thyristor**. What does it do in a circuit?

Answer 57

A **thyristor** is like a transistor. When a small current passes through the **gate** leg, it allows a larger current to flow from the **anode** to the **cathode** leg. This continues after the current into the gate has stopped. It is used in **latching** circuits.

Question 58

Name the component

Answer 58

Voltmeter

Question 59

This is a **switch (latching)**. What does it do?

Answer 59

A **latching switch** can be used to turn a circuit on. It stays on until turned off.

Question 60

Name the component.

Answer 60

Push to make switch

Question 61

This is a **push to make switch.** What does it do?

Answer 61

A **push to make switch** can be used to turn the circuit on or as a contact sensor. It only stays on whilst pressed.

Question 62

This is a **diode**. What does it do?

Answer 62

A **diode** only allows electricity to flow in one direction. It can be used to protect components.

Question 63

Name the component.

Answer 63

Diode

Question 64

This is a **relay**. What does it do?

Answer 64

A **relay** can be used as part of a low powered circuit to turn on a high powered circuit.

Question 65

Name the component.

Answer 65

Relay

Question 66

This is an **integrated circuit**. What is it used for?

Answer 66

There are lots of different types of **integrated circuit****s**, ranging from timers to logic gates to programmable chips. They are used for amplifiers, counters, timers, processors and oscillators.

Question 67

Name the component.

Answer 67

Integrated Circuit

Question 68

What is a **component**?

Answer 68

A **component** is a part used to make an assembly.

Question 69

What is an **input** component?

Answer 69

**Input** components activate the circuit. They include switches and sensors.

Question 70

What is a **process** component?

Answer 70

A **process** component controls what the circuit does in response to the input.

Question 71

What is an **output** component?

Answer 71

**Output** components are a range of devices that turn electricity into light, sound or movement.

Question 72

This is a **thermistor**. What is it used for?

Answer 72

A **thermistor** is used for temperature sensing. It is a type of resistor where the resistance increases as the temperature increases.

Question 73

Name the component.

Answer 73

Thermistor