Chapter 3

Question 1

How are X-Rays produced

Answer 1

When high electricity produces electrons to interact with matter

Question 2

What is electricity

Answer 2

The movement of electrons

Question 3

What is electrostatic

Answer 3

The study of the distribution of fixed charge electron that are at rest

Question 4

All object have?

Answer 4

Charge

Question 5

What is electrification

Answer 5

Describes the process of adding or subtracting a charge electron from an object

Question 6

Something that is negative has

Answer 6

More electrons

Question 7

Something that is positive has

Answer 7

Less elections

Question 8

Earth =

Answer 8

Ground zero

Question 9

Ground has zero potential because

Answer 9

Equally balanced charges have potential to do work and release energy

Question 10

What are the 5 laws for electrostatics

Answer 10

1. Repulsion
2. Inverse square law
3. Law of distribution
4. Law of concentration
5. Law of movement

Question 11

What is the law of repulsion

Answer 11

Like charges repel and unlike attract

Question 12

What is the inverse square law

Answer 12

The force between 2 charges is directly proportional to the magnitudes (electrostatic force) and increase proportional to the square of distance between them

Question 13

What is the formula for the inverse square law

Answer 13

Page 37 Carlton
I lower 1 over I lower 2 = D upper and lower 2 over D upper 2 lower 1

Question 14

What is the law of distribution

Answer 14

Charges reside on the external surface of conductors because the charges will be evenly spaced on the object

Question 15

What is the law of concentration

Answer 15

The greatest concentration of charge will be on the surface where the curves are the sharpest

Question 16

What is the law of movement

Answer 16

Only the negative charges are going to move along the conductor because they are free

Question 17

What are 3 ways objects can be electrified

Answer 17

1. Friction
2. Contact
3. Induction

Question 18

What is friction

Answer 18

When one object is rubbed up against another and allows the electrons to pass between the two objects

Question 19

What is contact

Answer 19

2 objects touch each other allowing the transfer of electrons
Process of equalization one object is negative while the other is positive
Causes static discharge

Question 20

What is induction

Answer 20

A coil of wire with electrical current is supplied to it
Forcefield that is electricity
Tye process of forcefields interacting without touching

Question 21

What is electrical current

Answer 21

Electrons are moving predominantly in the same direction

Question 22

What is electrical circuit

Answer 22

A pathway that permits electrons to move in a complete circle from their source
Must have excess of electrons at one end of circuit and a deficiency at the other end to allow electrons to flow

Question 23

What makes up an Insulator

Answer 23

Plastic
Rubber
Glass

Question 24

What makes up a semiconductor

Answer 24

Silicon
Germanium

Question 25

What makes up a conductor

Answer 25

Copper Aluminum

Question 26

What makes up a superconductor

Answer 26

Titanium

Question 27

3 conditions that encourage the flow of electrons

Answer 27

1. Vacuum 2. Gasses 3. Ionic Solutions

Question 28

Vacuum?

Answer 28

All air molecules are removed

Question 29

Gasses?

Answer 29

Will promote the drift of electrons from negative to positive

Question 30

Ionic solutions?

Answer 30

Electrolysis

Question 31

Electron flow

Answer 31

Electrons flow from high concentration to low concentration (negative positive)

Question 32

Electrical circuit

Answer 32

Is the opposite of electron flow (positive negative)

Question 33

Dc (direct current)

Answer 33

Electrons are predominantly flowing in a forward motion

Question 34

Ac (Alternating Current)

Answer 34

Electrons are moving forward and backwards as they are flowing

Question 35

Quantity of electrons

Answer 35

- current - mA - measured in amps - direct relationship

Question 36

Force in which they travel

Answer 36

- potential difference - voltage v unit si unit is joule j - kilovoltage K

Question 37

Amount of opposition to the current flow on the circuit

Answer 37

- resistance - unit is ohms symbol is an upside down horseshoe - several factors impede the flow of electrons - increased resistance

Question 38

Ability to conduct

Answer 38

Material. Valance shell. The element that has only one electron on its valance shell is a better conductor And the farther the valance shell is from the nucleus

Question 39

What are good conductors

Answer 39

Copper Silver Gold

Question 40

Length of conductor

Answer 40

Length is directly proportional to resistance

Question 41

Diameter of conductor

Answer 41

Diameter is inversely proportional to resistance

Question 42

Temp

Answer 42

Increased temp = increased resistance

Question 43

Ohms law

Answer 43

The mathematical relationship between currents, potential difference and resistance

Question 44

Series circuit

Answer 44

Is one resistor blows the whole circuit stops the electricity

Question 45

Parallel circuit

Answer 45

Current will stop there only but not shut down the whole circuit

Question 46

Variable resistor / rheostat / potentiometer

Answer 46

This permits variable resistance