Basic Circuitry

Question 1

___ is a form of energy resulting from the existence of charged particles
(such as electrons or protons), either statically as an accumulation of charge or
dynamically as a current. I

Answer 1

Electricity

Question 2

It is a secondary energy source that can be generated
from primary sources such as fossil fuels, nuclear, and renewable resources like
sunlight, wind, and hydropower

Answer 2

Electricity

Question 3

is the flow of electric charge

Answer 3

electricity

Question 4

It is a fundamental aspect of physics and a versatile form of energy
used to power various devices and systems in our everyday lives.

Answer 4

Electricity

Question 5

Unit of measure for electric charge

Answer 5

coulomb

Question 6

unit for the floe of electric charge

Answer 6

amperes

Question 7

unit for the force that drives the electric charge

Answer 7

volts

Question 8

unit of resistance opposes the flow of electric current

Answer 8

ohms

Question 9

2 types of electricity

Answer 9

1. static electricity
2. dynamic electricity

Question 10

is the result of an imbalance between negative
and positive charges in an object. These charges can build up on the surface of an object until they find a way to be released or
discharged.

Answer 10

Static electricity

Question 11

is the flow of electric charges through a
conductor; in other words, an electric current.

Answer 11

Dynamic electricity

Question 12

Electrification of objects occurs when they gain a net __ or a net __

Answer 12

positive charge; negative charge.

Question 13

An object may be electrified in 3 ways:

Answer 13

1. friction
2. conduction
3. induction

Question 14

When two objects are rubbed together, electrons may transfer from one object to the other.
The object that gains electrons becomes negatively charged, while the object that loses electronsbecomes positively charged.

Answer 14

Friction

Question 15

electrification through friction: The object that gains electrons becomes ___, while the object that loses electrons
becomes ____

Answer 15

negatively charged;positively charged

Question 16

When a charged object comes into direct contact with a neutral object, electrons transfer between them. This results in the neutral object acquiring the same type of charge as the charged object.

Answer 16

Conduction

Question 17

conduction results in the neutral object acquiring the ____ type of charge as the charged object.

Answer 17

same

Question 18

In this method, a charged object is brought near a neutral object without touching it.
This causes a redistribution of charges within the neutral object, creating regions of opposite charges.

Answer 18

Induction

Question 19

is the study of stationary or resting electric charges

Answer 19

Electrostatics

Question 20

is the attractive or repulsive force between two electrically charged objects

Answer 20

electrostatic force

Question 21

Principles of electrostatics: the electrostatic force between two charges is ____ proportional to the product of their quantities and ___ proportional to the square of the distance between them (Coulomb’s law)

Answer 21

directly;inversely

Question 22

is the steady flow of electric charges or the flow of electros from atom to atom

Answer 22

Dynamic electricity

Question 23

Dynamic electricity is more commonly known as the

Answer 23

electric current or electricity

Question 24

Electrons in the more remote orbitals experience ___force of attraction from the nucleus and are also repelled by other electrons, and so are said to be more ___ bound.

Answer 24

Electrons in the more remote orbitals experience LESSforce of attraction from the nucleus and are also repelled by other electrons, and so are said to be more loosely bound.

Question 25

I

Question 26

In a solid material, orbital elections are influenced by the __

Answer 26

proximity of neighboring atoms

Question 27

electrons are no longer in discrete levels but now within a band of energies. the outer two bands are the __ and __

Answer 27

valence and conduction band

Question 28

Types of electrical materials

Answer 28

1.conductor 2.insulator 3.semi-conductor

Question 29

a material with a large number of electrons in the conduction band is a good __

Answer 29

electrical conductor.

Question 30

are materials that readily allow a flow of electrons

Answer 30

conductors

Question 31

materials with no electrons in the conduction band is a good __

Answer 31

electrical insulator

Question 32

are materials that will only allow electron flow in extreme conditions

Answer 32

insulator

Question 33

are materials that under some conditions behaves as an insulator and in other conditions behaves as a conductor.

Answer 33

semi-conductors

Question 34

examples of semi-conductors

Answer 34

silicon and germanium

Question 35

is the movement of electric charge or is the moving electrons

Answer 35

electric current

Question 36

also defined as the rate of flow of electrons

Answer 36

electric current

Question 37

the number of electrons passing through a given point per unit time

Answer 37

electric current ampere (A)

Question 38

2 types of current

Answer 38

1. direct current 2. alternating current

Question 39

# i is a type of current that flows in only one direction battery is a good example

Answer 39

direct current

Question 40

is a current that changes direction in cycles as the electric potential of the sources changes. ex. electric socket

Answer 40

alternating current

Question 41

electric current through an x-ray tube 2 currents:

Answer 41

1.Filament current 2.tube currrent

Question 42

small current applied to the filament of the x-ray tube

Answer 42

filament current

Question 43

the rate of floe of electrons that have travelled across the tube

Answer 43

tube current

Question 44

the filament current of about __ A will generate tube current measured in milliamperes (mA)

Answer 44

5-7 A

Question 45

is the driving force which moves the electrons along the conductor

Answer 45

electric potential (voltage)

Question 46

is the ability to do work because of a separation of charges

Answer 46

electric potential

Question 47

is what propels the electrons to move from cathode to anode even in the absence of a conductor

Answer 47

electric potential across the x-ray tube

Question 48

the high potential difference, measured in __ is necessary.

Answer 48

kilovoltage

Question 49

the voltage supply of 110V or 220V has to be converted to __ of volts before being supplied across the x-ray tube.

Answer 49

thousand

Question 50

it is the impedance to the flow of electrons, thereby reduces the flow of electric current through a circuit

Answer 50

electric resistance

Question 51

resistance is dependent on the material used as a __

Answer 51

conductor

Question 52

is the measure of how the device or material reduces the electric current flowing through a circuit.

Answer 52

Electric resistance (ohm)

Question 53

factors affecting resistance

Answer 53

- material - length - cross-sectional area - temperature

Question 54

___ conductor has more resistance

Answer 54

- long - small cross-sectional area - greater temp

Question 55

defiones the relationship between voltage, current and resistance

Answer 55

ohm's law

Question 56

electric current is ___ to voltage and is ____ to resistance.

Answer 56

proportional;inversely proportional

Question 57

as current pass through a cable with a resistance, it is apparent that some of the available electric power will be lost in the cable.

Answer 57

power loss

Question 58

the lost energy in the cable is converted to ___

Answer 58

heat

Question 59

power loss can be kept to minimum by:

Answer 59

-reducing the current flowing within the cable -reducing the resistance of the cable

Question 60

# Power sources for x-ray machine meralco :

Answer 60

-tends to fluctuate -unreliable

Question 61

# Power sources for x-ray machine the usual incoming line voltage for x-ray machine in the PH:

Answer 61

- 220V, 60Hz - alternating current - single-phase/three-phase power

Question 62

the x-ray machine can be divided into

Answer 62

- the control console - the high voltage generator - the x-ray tube

Question 63

allows the radiologic technologists to control the x-ray tube current and voltage (by controlling the mAs and kVp)

Answer 63

control console

Question 64

- increases the low voltage from autotransformer to high voltage (in kilovolts) - coverts AC to DC - provides the current necessary for filament

Answer 64

high-voltage generator

Question 65

- the primary part of the x-ray imaging system - converts electrical energy into electromagnetic energy in the form of x-ray

Answer 65

xray tube