DC Theory Flashcards

1
Q

Engineering notation

A

Exponents will always be moved in increments of three. The coefficient is greater than or equal to one and less than 1000.

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2
Q

Tera

A

(T) 10^12 trillion times

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3
Q

Giga

A

(G) 10^9 billion times

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4
Q

Mega

A

(M) 10^6 million times

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5
Q

Kilo

A

(k) 10^3 thousand times

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6
Q

Milli

A

(m) thousandth of 10^-3

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7
Q

Micro

A

(miu) millionth of 10^-6

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8
Q

Nano

A

(n) billionth of 10^-9

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9
Q

Pico

A

(p) Trillionth of 10^-12

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10
Q

1,001,001,001,000.001001001001

A

1,001,001,001,000.001001001001

T. G. M. k. m. u. n. p

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11
Q

What is atomic theory

A

Matter is anything that occupies space, as weight (mass), or requires energy to move. Matter consists of various sized particles, known as molecules.

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12
Q

What is a molecule

A

A molecule is the smallest particle that a compound to be broken down into and still retain the properties of that compound

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13
Q

What is a compound

A

A compound results from the combination of two or more different elements

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14
Q

What are molecules made up of

A

Elements

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15
Q

What are elements made up of

A

Atoms

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16
Q

What is an atom

A

The smallest particle of an element that retains the characteristics of that element

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17
Q

What does an atom consist of

A

Electrons, protons, neutrons.

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18
Q

What are electrons

A

They are negatively charged particles.

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19
Q

What are protons

A

They are positively charged particles.

20
Q

What are neutrons

A

They are neutral particles

21
Q

What are the two heaviest particles of an Atom

A

Protons and neutrons, this is why we are found in the center of an Atom

22
Q

What our valence electrons

A

Electrons found in orbit on the outermost ring, this causes the electron to require less energy to be “knocked out of orbit”

23
Q

What is a valence ring

A

The outermost ring of an Atom where electrons travel

24
Q

The further away from the nucleus that an electron is…

A

The less energy is required to “knock that electron out of its orbit”.

25
Q

What is electromotive force

A

The influence that makes electrons move.

26
Q

When one coulomb of charge exists, what is the electromotive force?

A

One volt

27
Q

One coulomb is?

A

6.25E18 electrons

28
Q

Letter for electromotive force and how it’s measured

A

E … In volts

29
Q

Current and how it’s measured

A

The directed flow of electrons through a circuit. Amperes

30
Q

Resistance and how it’s measured

A

Resistance to current flow. Measures in ohms

31
Q

Conductance

A

Opposite of resistance. Measures in Siemens “s”. Symbol for conductance is G

32
Q

Compositions of resistors

A

Carbon, wire wound, metal film, surface mount

33
Q

Ohms law

A

E
I = __
R

34
Q

LARS

A

Left add, right subtract

35
Q

Ground connections

A

A common reference point in every circuit

36
Q

Earth ground

A

To the earth

37
Q

Chassis ground

A

Connected to an appliance or the bodywork of a car

38
Q

Common

A

Subió usted yo represent a common return path

39
Q

What is the voltage of a ground always assumed to be

A

Zero

40
Q

I

A

E/R

41
Q

E

A

IR

42
Q

R

A

E/I

43
Q

Learn about types of resistors

A

Learn about fuses and circuit breakers

44
Q

Learn about variable resistors

A

Learn about the parts of a variable resistor

45
Q

Measure current

A

Make a break fill a break

46
Q

Measure resistance

A

De energize the circuit