Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Rad tech subjects > physics final > Flashcards

physics final Flashcards

1
Q

binding energies are measured in …….

binding energy is…

A

electron volts.

The energy it takes to remove an electron from its shell

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

The atomic number, or Z # and the number of _________is the same.

A

protons

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

what is the binding energy of a tungsten K shell electron?

A

69.5

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

what type of current does the x-ray TUBE use?

A

DC

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

A step up transformer converts volts to_______

A

kilovolts

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

diode rectifiers in an x-ray circuit convert _________current to _______current.

A

AC to dc

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

where are x-rays produced?

A

at the actual focal spot

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

when high-speed electrons from the filament in the tube crossto the anode what type of radiation is being created?

A

primary

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

what are the two types of primary radiation?

A

Brems and characteristic

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

The majority of the emission spectrum is made up of what type of radiation?

A

brems

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

The tube housing and glass window of the x-ray to our considered ________ _________.

A

inherent filtration

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

The reflective mirror in the x-ray tube is considered ________ filtration

A

added

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what two types of Filtration = total filtration?

A

inherent, added

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what is the line focus principal used for?

A

to dissipate heat and increase detail

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

when the target is angled less than 45° which focal spot is smaller?

A

effective.

The actual focal spot is larger

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

the Octet rule states:

A

The outermost shell of an Atom never exceeds 8 electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

The periodic table is based upon ______ ______.

A

atomic number

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

photon wavelength is inversely or directly proportional to photon frequency?

A

inversely

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

what are the two theories that x-rays might be described as

A

wave theory and particle theory

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

electromagnetic radiation has properties of

A

waves and particles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

in wave theory, Frequency and wavelength are _______proportional

A

inversely

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

what particles distinguish one element from another?

A

protons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

what is the wave equation?

A

V= F X W

Velocity equals frequency times wavelength

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

what are three properties of x-rays?

A

they can ionize matter, cannot be focused, cause florescence of certain crystals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Electric potential difference is measured in ________
volts
26
the mA is a unit of ______
current
27
mass is the quantity of _____
matter
28
is binding energy increased or decreased as it gets closer to the nucleus?
increased
29
what is the smallest particle of an element?
atom
30
two or more atoms chemically united equal _____
a molecule
31
in simple terms describe theory of relativity
matter and energy are interchangeable
32
protons and neutrons are composed of even smaller structures called ________
quarks
33
if an atom gains or loses neutrons it is called an_____
isotope
34
what are the two types of mechanical energy
potential and kinetic
35
x-rays are a form of man-made electromagnetic energy that is created in the tube when high-speed electrons electronics are ______ _______
suddenly stopped
36
for electromagnetic radiation to be capable of ionization they must have an energy higher than
10 electron volts
37
electromagnetic radiation can transfer energy to an atom by...
excitation
38
describe excitation
electrons in and Atom are moved to a higher energy state without actually being removed from the Atom
39
in what way are electromagnetic waves unique?
no medium is needed they travel in a vacuum
40
the INTENSITY of the wave is defined by its maximum height measured in...._______
Amps (amplitude)
41
who invented the motor?
orsted
42
what are the 5 laws of electrostatics?
repulsion-attraction inverse square law distribution concentration movement
43
objects can be electrified by 3 methods:
friction contact induction
44
what type of current do transformers use?
AC
45
the QUANTITY of electrons flowing is called the ______
current
46
current is measured in _____
amps
47
what is the unit to measure resistance?
Ohms
48
what are the 4 primary factors for electrical circuits?
ability to conduct electrons length of the conductor cross sectional diameter temperature
49
ohms law
resistance ( ohms) X current (amps) (I) = potential difference (volts).
50
Who discovered that an electric current flowing through a wire could affect a Compass
oersted
51
faradays experiment proved that a current could be induced by a magnetic field only :
if the field is changing
52
A magnet created by a coil of wire is called a
solenoid
53
The magnitude of an induced current depends on what three things?
angle of the conductor, number of turns in the conductor, velocity of the magnetic field as it moves past the conductor
54
true or false: | transformer converts electrical potential to higher or lower intensity
true
55
magnetic lines of force are also referred to as _____ ____
flux lines
56
and AC generator produces current that is mathematically expressed as a ______wave.
sinusoidal
57
what type of motor uses slip rings?
AC
58
List three ways to create current in a circuit
move the wire, move the conductor, Vary the flux lines
59
what three factors control how effective solenoids and electromagnets are
diameter of the coil, length of the coil, current passing along the coil
60
what three things determine the strength of solenoids and electromagnets?
Number of loops or turns of the wire, the current strengths, permeability of the core
61
what four factors regulate the strength of induced current
strengths of the magnetic field speed of the motion between lines of force and the conductor angle between the magnetic lines of force and the conductor and the number of turns in the coil
62
what law supports self induction
lenzs law
63
A device capable of accumulating and storing the electrical charge
capacitors

Rad tech subjects (16 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions