Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Understanding Modern Electronics > 1. Electricity And Electronics > Flashcards

1. Electricity And Electronics Flashcards

1
Q

What does “AC” stand for?

A
  1. Alternating Current
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What does “A” stand for?

A
  1. Ampere
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What does the Greek letter “B” stand for?

A
  1. Beta (transistor current gain)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What does “DC” stand for?

A
  1. Direct Current
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What does “F” stand for?

A
  1. Farad
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What does “Hz” stand for?

A
  1. Hertz
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What does “kHZ” stand for?

A
  1. Kilohertz
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What does the Greek letter “uF” stand for?

A
  1. Microfarad
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What does “mA” stand for?

A
  1. Milliamp
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What does “V” stand for?

A
  1. Volts
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What does “W” stand for?

A
  1. Watt
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What does the symbol for Ohm look like?

A
  1. The Omega symbol
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What device was used to control electric current during the first half of the 20th century?

A
  1. The vacuum tube
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

How were vacuum tubes constructed?

A
  1. With glass, forming an evacuated tube with metal electrodes, between which electrons
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What was the “grid” in early vacuum tubes?

A
  1. The control electrode in the tube
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What occurred in the 1950’s that revolutionized the electronics world?

A
  1. The invention of the transistor
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What was the function of a vacuum tube?

A
  1. To allow one circuit to control another
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

How are both transistors and vacuum tubes similar?

A
  1. They both allow one circuit to control another
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

How are transistors different from vacuum tubes?

A
  1. They are a solid state device
  2. They are smaller
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What major development occurred in the 1960’s and 1970’s?

A
  1. The invention of the Integrated Circuit
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is an integrated circuit?

A
  1. Many transistors or other electrical components connected together by a single tiny wafer of the element silicon
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

How many transistors can a device have today?

A
  1. Anywhere from a handful to Billions
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Who was Gordon Moore?

A
  1. The cofounder of Intel Corporation and creator of Moore’s law
24
Q

What is Moore’s Law?

A
  1. A prediction made by Gordon Moore that as integrated circuits were becoming more compact, the number of transistors on a single chip would double every 18 months
25
Q

How was Moore’s Law innacurate?

A
  1. The number of transistors on a single chip doubled every two years instead of 18 months
26
Q

What are the two varieties of electric charge?

A
  1. Positive
  2. Negative
27
Q

What is the main carrier of a positive electrical charge?

A
  1. Protons in an atomic nucleus
28
Q

What is the main carrier of a negative electrical charge?

A
  1. Electrons
29
Q

What is an electrical conductor?

A
  1. A material containing charges (electrons) that are free to move throughout the entire metal, and are not tightly bound to one single atom.
30
Q

Why are metals great electrical conductors?

A
  1. Usually one or two valence electrons become free to move throughout the material, and are not bound to any single atom
31
Q

What is an insulator?

A
  1. A material that lacks free charges, or electrons
32
Q

Why can’t the electrons in insulators move freely?

A
  1. They are bound tightly to the individual atoms
33
Q

What is an electric current?

A
  1. A flow of charge
  2. Or the amount of charge per time crossing a given area
34
Q

What can we compare current to to better understand it?

A
  1. A wave. The wave is not the water, but the flow of water
35
Q

How is electric current measured?

A
  1. Amperes (A)
36
Q

What is Voltage?

A
  1. The force, or push, that drives electric current through a wire or device
37
Q

What does Voltage measure?

A
  1. The energy per charge
38
Q

How many electrons per second flow in 1A?

A
  1. 6 x 10 18th
39
Q

What is Electric Power?

A
  1. The rate at which a system delivers, consumes, loses, produces, or transfers energy from one form to another
40
Q

How is electric power calculated?

A
  1. Electric Current X Voltage
41
Q

How is electric power measured?

A
  1. Watts
42
Q

What does electrical resistance measure?

A
  1. The resistance to the flow of current
43
Q

What is Ohm’s law?

A
  1. The equation for the measure of resistance
44
Q

What is the equation for Ohm’s law?

A
  1. I = V/R
  2. Current = Voltage/Resistance
45
Q

What is the formal definition of Electronics?

A
  1. The branch of physics, engineering, and technology dealing with electrical circuits that involve active electrical components such as vacuum tubes, transistors, diodes and integrated circuits, and associated passive interconnection technologies.
46
Q

What is the simplified definition of electronics?

A
  1. The control of one electrical circuit by another
47
Q

What is an electrical circuit?

A

An interconnection of components intended to do something useful, generally containing a source of energy

48
Q

When did Gordon Moore come up with Moore’s law?

A
  1. 1965
49
Q

What is Electric Charge?

A
  1. A fundamental property of matter that comes in both positive and negative
50
Q

What occurs when two like charges come close to each other?

A
  1. They repel each other
51
Q

What occurs when two opposite electrical charges come close to each other?

A
  1. The attract each other
52
Q

Why is Ampere capitalized?

A
  1. It’s named after a Frenchman
53
Q

What determines the direction of current?

A
  1. The direction that positive charges flow, not the direction of negative flow
54
Q

What is the detailed equation for Electric Power?

A
  1. Current x Voltage or (charge / time)(energy / charge) = Energy/Time
55
Q

What is the formula for Power?

A
  1. Energy / Time

Understanding Modern Electronics (2 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions