Unit One

Question 1

Electricity

Answer 1

Flow of electrons

Question 2

Triboelectric Charging

Answer 2

The Process of electron transfer as a result of two objects coming into contact with each other and then separating
(tribe means to rub)

Question 3

3 things we need for electricity

Answer 3

1. Power source
   2.Closed Circuit Path
   3.Resistance

Question 4

When does electron flow occur?

Answer 4

It occurs when an electron from one atom knocks electrons of another atom out of orbit

Question 5

What is an at atom?

Answer 5

The basic building block of the universe. Its the smallest particle that an element can be broken into

Question 6

What is all matter made up of?

Answer 6

A combination of atoms

Question 7

What is matter

Answer 7

Any substance that has weight and takes up space

Question 8

What is a molecule?

Answer 8

The smallest part of a compound

Question 9

What are the three principle parts of an atom?

Answer 9

1.Protons (+ charge)
2.Neutrons (0 charge)
3.Electrons (- charge)

Question 10

Where are the protons and neutrons located in an atom?

Answer 10

Nucleus

Question 11

Where are the electrons in an atom?

Answer 11

They orbit around the nucleus

Question 12

What is the valance shell?

Answer 12

The outer most electron orbit

Question 13

What is the most amount of electrons the valance shell of an atom can hold?

Answer 13

No more than 8

Question 14

What is a valance electron?

Answer 14

Electrons contained in the valance shell

Question 15

What does the number of valance electrons determine?

Answer 15

Chemical and Electrical properties

Question 16

What number of valance electrons make good conductors?

Answer 16

1,2, or 3

Question 17

How many valance electrons do silver, copper, and gold have?

Answer 17

One

Question 18

What is the law of charges?

Answer 18

Opposite charges attract and like charges repel

Question 19

Coulombs law of Electrostatic Charge states what?

Answer 19

The force of electrostatic attraction or repulsion is directly proportional to the product of the two charges and inversely proportional to the square of the difference between them

Question 20

What is the result of an imbalance electrons between objects called?

Answer 20

Static Electricity

Question 21

What are conductors?

Answer 21

Materials that allow for easy flow of electrons

Question 22

What conductor is the best?

Answer 22

Silver

Question 23

What conductor is the most practical?

Answer 23

Copper

Question 24

When do free electrons exist?

Answer 24

When current is flowing

Question 25

What are insulators?

Answer 25

Materials that resist the flow of electrons

Question 26

How many electrons are typically in an insulators valance shell?

Answer 26

7 or 8

Question 27

What does insulation determine?

Answer 27

The amount off voltage that can be applied to a conductor and the temperature at which the conductor may be used

Question 28

What is a semiconductor?

Answer 28

Materials that do not have characteristics of good conductors or insulators

Question 29

What are conductor sizes measured in?

Answer 29

American Wire Gage (AWG) or Circular Mills

Question 30

What is one circular mill equivalent to?

Answer 30

0.001

Question 31

What is the equation to calculate resistance of a conductor?

Answer 31

R=(k)(l)/(c)(s)(a)

Question 32

What is Voltage?

Answer 32

Electrical pressure. A difference in electrical potential between two points

Question 33

Can voltage flow?

Answer 33

No, it exists across two points

Question 34

What is voltage drop?

Answer 34

The voltage required to force electrons through a value of resistance. If resistance goes up so does voltage

Question 35

What is current?

Answer 35

The flow of electrons

Question 36

What meter is current measured with?

Answer 36

The ammeter

Question 37

What is the conventional current flow theory?

Answer 37

It describes current flowing from (+) to (-)

Question 38

What is the electron flow theory?

Answer 38

It describes electron movement from (-) to (+)

Question 39

Voltage pushes current through what?

Answer 39

Resistance

Question 40

What are resistors?

Answer 40

Electrical components that are designed and constructed to have a specific value of resistance

Question 41

What are resistors used for?

Answer 41

To deliberately introduce resistance into a circuit

Question 42

What is a schematic diagram?

Answer 42

They are simplified pictorial representations of an electrical circuit

Question 43

How are components represented in schematic diagrams?

Answer 43

Simplified Standard Symbols

Question 44

What are schematic diagrams used for?

Answer 44

They are used for design, construction, and maintenance of electrical and electronic circuits

Question 45

What are wiring Diagrams?

Answer 45

1.They emphasize connections between elements of a circuit or system 2.Use horizontal and vertical lines to represent the wires 3.Use simplified pictorials that clearly resemble circuit/system componets

Question 46

What is a circuit?

Answer 46

An unbroken loop of conductive material that allows electrons to flow through continuously from one side of a voltage source to the other

Question 47

What three things must a functional circuit contain?

Answer 47

1. A voltage source 2. A closed circuit path 3. A load or resistance in the circuit

Question 48

What is continuity?

Answer 48

An electrical connection across two points

Question 49

What is a short circuit?

Answer 49

A connection from (-) to (+)

Question 50

What is ground fault?

Answer 50

Hot to Ground

Question 51

What is the Mega Ohm Meter (Megger)?

Answer 51

It is used to test the integrity of conductor insulation

Question 52

What are multi range meters?

Answer 52

They are designed to use one meter movement to measure several ranges of voltage, current, and resistance