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Electricity and Electronics
Electricity and Electronics
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An #electricity and #electronics quiz to review the basic laws and #circuits
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Questions
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Answers
1
What is shown?
A battery
A diode
A capacitor
A transformer
2
Electronics are
circuits
AIs
Conductive wires
programmable circuitry
3
What makes something energy efficient?
If it is able to use AC current
If the overall process doesn't take lots of electricity
If there is little wastage of energy in things like heat
4
Capacitors are made of
Two conductive plates with a nonconductive material between
Coils of wire
Pottery
5
What do "protons" refer to when discussing electricity?
Hydrogen atoms without electrons
Negative flow of charge
Conductive material
A positive quark
6
Static electricity is created when...
Electricity travels through air
Lightning strikes
Electricity is conducted through a circuit
There is a buildup of opposite charges on two things
7
What energy won the war of currents?
DC
BC
AC
CC
8
Which pin on an IC lets you know which gate is which?
Pin number one
The last pin
9
What is the best definition for: Electricity
Harnessed lightning
Energy
The flow of charge
Light and heat
10
Brown wire is
It doesn't have a specific charge
The same as black wire
The same as red wire
Negative
11
AC current is generated by
Through chemical reactions
Using an alternator
Spinning a magnet around a coil of wire
Spinning a coil of wire around a magnet
12
A possible use for LEDs is ...
Light
AC to DC conversion
Visual Feedback
All of the above
13
Capacitors can be dangerous because
They are polarized
They might hold charge in electronics after being unplugged
14
Which of these is Ohms' law?
V = I * R
All of the above
P = (I^2) * R
P = (V^2) * (R^-1)
15
True or False: Capacitors are a power source
False
True
16
What is shown in the following image?
An inductor
A capacitor
A diode
A resistor
17
A thin pipe section in the water/pipe analogy best represents...
A blockage
An output that is taking up energy
A switch
A resistor
18
What does this describe: A switch in the circuit isn't closed
Short Circuit
Load
Open Circuit
Broken Path
19
A load is
A surge in the circuit caused by battery fluctuations
A strong amount of power
A heavy weight
A portion of a circuit that consumes power
20
"Free electrons forced to move from one atom to the next in a chain" BEST DESCRIBES:
Static electricity
Electrical Current
Electrical gradient
None of the above
21
What is the name for the way this circuit is sorted?
Flowchart
ICs
Blocks
Groups
22
Capacitors
Can help make AC current linear
Are always polarized
Are like short term batteries
Are made of a chemical liquid
23
Which of these consume energy?
Battery
Resistors
Light Bulbs
Switch
24
Is wood a conductor or insulator?
Insulator
Conductor
25
In the water/pipe analogy, More water = More pressure = ...
More current
More voltage
26
How do you identify the direction of an IC?
The manual
The number of terminals on it
Notch on the left side end and a dot on the bottom left
27
What analogy is commonly used to describe voltage and current?
There is no analogy
Birds and bees
Water pressure and pipes
Electron flow through conductors and resistors
28
Voltage in series
stays the same
splits
29
A short circuit occurs when...
there is not enough load/resistance while using DC current
there is no resistance while using an AC or DC current
an AC current is used
30
Commutators...
Make AC current flow in one direction
Are used in power grids
31
The lightbulb in a circuit would be an example of
A resistor
A load
A photo diode
A capacitor
32
Current is equal to...
Resistance divided by amperes
Voltage times resistance
Voltage divided by resistance
The speed moved through the circuit
33
Voltage in parallel circuits
stays the same
splits
34
How can you tell the polarity of an LED?
The longer leg is + and connected to the + battery side
The longer leg is + and connected to the - battery side
The longer leg is - and connected to the + battery side
The longer leg is - and connected to the - battery side
35
True or false: A greater build up of two charges causes a greater need to equalize them.
True
False
36
What best explains this circuit?
Short Circuit
The circuit is permanently broken
It has resistance, therefore functions properly
It's not a circuit since it has no battery
37
If you have negative resistance...
You need more power
That is impossible
You have a short circuit
Your resistors are broken
38
True or False: Some resistors can lower current
False
True
39
AC is
Used in my car
A linear current
An air conditioner
Alternating Current
40
Which way does electricity flow?
Technically both, but practically negative to positive
Positive to negative
Technically both, but practically positive to negative
Negative to positive
41
Electricity can...
All of the above
Emit Light
Emit Heat
Emit a magnetic field
42
Best define: Power loss
unwanted energy transfer
destruction of energy
excess resistors
43
Responses to input and output in circuits are due to
All of the above
Sensors
How gates open and close in a circuit
Artificial Intelligence
44
You can program circuitry: True or false
True
False
45
AC current is described using
Watts
Volts
Amperes
Hertz
46
Inductors:
Act like resistors
Are wound around a metal core
Are special circuit loads
Regulate flow of electricity
47
True or false: ICs can act as switches
True
False
48
What are the requirements for a functioning DC circuit?
Closed Switches
Constant and conductive for path for energy flow
Must flow from negative to positive
All of the above
49
Rectifiers can...
Allow energy through both ways
Convert AC to DC
50
What is the unit for current?
Flow
Amps
Coulombs/second
Volts
51
An advantage of DC is
It is safer
It can transport large amounts of electricity
52
Voltage is equal to
Ohms divided by resistance
Interest times rate
Volume times amps
Current times resistance
53
Which of these lists only contains forms of energy?
Electrical, thermal, afluent
Electrical, electromagnetic, rotational
Electrical, chemical, thermal, pressure
Mechanical, electrical, chemical, thermal, electromagnetic
54
What is shown?
An Inductor
Two 'm's
A transformer
55
Transistors
All of the above
Have 3 terminals
Act as small gates
Either turns on path one way or another way
56
The war of currents was between
Nathan Ampering, John Wattson
John Wattson, Nikola Tesla
Thomas Edison, Nikola Tesla
Ohm Igod, Nathan Ampering
57
What is the unit for Power?
Watts
Coulumbs
Volts
Ohms
58
Red wire is
Positive
Negative
59
Ceramic capacitors...
Are bidirectional
Are low power
Both
60
An advantage of Alternating Current is
It is generated by clean energy
It won’t short circuit, even without resistance
61
Transistors can
have a slight addition of current through a third wire
create the numbers one and two
store power
62
What does this picture show?
An inductor
A transistor
A transformer
A capacitor
63
What does in mean for a circuit component to be polarized?
To have a positive and negative side
To only work with AC current
To only allow electricity to flow one way
64
Can circuits respond to stimuli?
Yes
No
65
What does an R in a circuit stand for?
Rectifier
Resistor
Relay
Transformer
66
LEDs are
A special kind of diode
Conductive pencil lead used in circuits
67
Current in parallel circuits
stays the same
splits
68
A long leg means...
That the circuit component is nonpolarized
That leg is the negative leg
That leg is the positive leg
69
What are metals the best example of?
Polar materials
None of the above
Conductors
Insulators
70
What does this picture show?
Diode
Capacitor
Resistor
Transistor
71
What is this picture showing?
A diode
A speaker
A MOSFET
A buzzer
72
What does this picture show?
A resistor
A transistor
A capacitor
An inductor
73
Resistors lower _ but not _
Current, Voltage
Pressure, Speed
Speed, Pressure
Voltage, Current
74
If Resistance is equal to 3 Ω and Voltage is equal to 4 volts...
Current is equal to 3/4 amps
Current is equal to 2 and 1/3 amps
Current is equal to 1.33 amps
Current is equal to 4/3 amps
75
True or false: Voltage = The potential energy amount between two points in a circuit
True
False
76
If Voltage is equal to 7 volts, and Resistance is equal to 2 Ω, what is the power?
0 Watts
3/2 Watts
2/7 Watts
3.5 Watts
77
What would the coating outside a wire be made of?
Polar materials
An Insulator
Plastic
Metal
78
A switch in a circuit applies to
(B) Only the parts after it
B + IF there's no battery connection on another direct path
None of the above
All the components
79
Current in series
stays the same
splits
80
Energy can never be _ or _
created, felt
destroyed, made
tangible, understood
heard, seen
81
High amps in the water/pipe analogy are like...
Thin tubes
Thick tubes
82
What is shown?
An indicator
A transistor
A transformer
A variable resistor
83
True or false: Energy is the ability to do work
False
True
84
Alternating current
Stays the same
Is a constant flow of energy
Reverses current direction many times per second
Would make my computer run faster
