Electronics

Question 1

What are transistors?

Answer 1

A type of high speed electronic switch

Question 2

What do you do instead of pressing a button on transistors?

Answer 2

You must send a signal of 0.7 volts to the base leg

Question 3

What are transistors usually protected by?

Answer 3

Resistors

Question 4

What is the function of a cell?

Answer 4

It transforms chemical energy into electrical energy

Question 5

What is the function of a battery?

Answer 5

Two or more cells in a series

Question 6

What is the function of a switch?

Answer 6

It connects components in a circuit

Question 7

What is the function of a resistor?

Answer 7

It slows down the flow of electrons in a circuit.

Question 8

What is the function of a variable resistor?

Answer 8

It slows down electrons. The resistance can change

Question 9

What does LDR stand for?

Answer 9

Light dependant resistor

Question 10

What does an LDR do?

Answer 10

The resistance depends on the light. More light = less resistance

Question 11

What does a transistor do?

Answer 11

Regulates voltage flow

Question 12

What is the function of a buzzer?

Answer 12

It buzzes

Question 13

What does basic circuit consist of?

Answer 13

A power supply and an output device

Question 14

What does a series circuit consist of?

Answer 14

More than one component in a series of

Question 15

What is a parallel circuit?

Answer 15

When the components are arranged so that the current can get to one component without having to flow through the other ones

Question 16

What is a complex circuit?

Answer 16

Have some components parallel, some in series. There must be a complete path for the current.

Question 17

What is a battery made up of?

Answer 17

Multiple cells

Question 18

What does LED stand for?

Answer 18

Light emitting diode

Question 19

What does LDR stand for?

Answer 19

Light dependant resistor

Question 20

What is a direct current?

Answer 20

The current only flows in 1 direction

Question 21

What is the current?

Answer 21

The quantity of electrons passing a point in 1 second

Question 22

What is the voltage?

Answer 22

The electrical pressure or force. It is equal to the supply voltage

Question 23

What is the current measured in?

Answer 23

Amps (A)

Question 24

What is the unit for the voltage?

Answer 24

Volts (V)

Question 25

What is electrical power measured in?

Answer 25

Watts (W)

Question 26

How can you tell which is the negative side of a LED?

Answer 26

It is flat and has a short leg

Question 27

What does a black stripe mean on a resistor?

Answer 27

0

Question 28

What dies a brown stripe mean on a resistor?

Answer 28

1

Question 29

What does a red stripe mean on a resistor?

Answer 29

2

Question 30

What does a orange stripe mean on a resistor?

Answer 30

3

Question 31

What does a yellow stripe mean on a resistor?

Answer 31

4

Question 32

What does a green stripe mean on a resistor?

Answer 32

5

Question 33

What does a blue stripe mean on a resistor?

Answer 33

6

Question 34

What does a purple stripe mean on a resistor?

Answer 34

7

Question 35

What does a black stripe mean on a resistor?

Answer 35

0

Question 36

What does a white stripe mean on a resistor?

Answer 36

9

Question 37

What are transistors 3 legs called?

Answer 37

Base, emitter, collector

Question 38

What is a transistor?

Answer 38

An electronic switch

Question 39

How many volts need to reach the base before a transistor works?

Answer 39

0.7 volts

Question 40

What is ohm’s law

Answer 40

V=IR

Question 41

What does a potential divider do?

Answer 41

Divide the current

Question 42

How many volts does a transistor need in its base to start it?

Answer 42

0.7

Question 43

What side of the LED is positive?

Answer 43

The long leg

Question 44

Which side of the LED is negative?

Answer 44

Short leg and flat side

Question 45

What size of resistors does a pic circuit have?

Answer 45

4.7k

Question 46

What is an example of a digital input?

Answer 46

A switch

Question 47

What is a start/stop cell like?

Answer 47

It is a parallelogram

Question 48

What shape is an output/input cell?

Answer 48

Rectangle with rounded corners

Question 49

What shape is a decision cell?

Answer 49

A rhombus with yes and no

Question 50

What does a closed loop have at the bottom?

Answer 50

A stop cell

Question 51

What does an open loop have at the bottom?

Answer 51

A line taking the current back to the front

Question 52

What does a thermistor do

Answer 52

Measures the temperature of a device

Question 53

What does a thermistor look like

Answer 53

Question 54

How much resistance will a pic circuit have going into the pic

Answer 54

4.7K

Question 55

Where is the negative rail of a circuit

Answer 55

The bottom

Question 55

Where is the positive rail in a circuit

Answer 55

On top

Question 56

How many volts does the positive rail have

Answer 56

5V

Question 57

How many volts does the negative rail have

Answer 57

0V

Question 58

How many volts does an LED need to light

Answer 58

2 volts

Question 58

Name some parts of a flowchart

Answer 58

Start cell, stop cell, output, input, wait, decision cell, compare cell

Question 59

What does an open loop have at the end

Answer 59

A stop cell

Question 60

Types of circuit

Answer 60

Genie, pic, parallel, series

Question 61

Where are the inputs and outputs in a circuit

Answer 61

Inputs-left Outputs-right