physics 1
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| show | Equal to the number of protons and neutrons in the nucleus of the atom.
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| If an atom has16 protons and 16 electrons, how many electrons are orbiting in the M shell? | show 🗑
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| show | An isotope has the same number of protons but a different number of neutrons.
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| What is the relationship between wavelength and frequency? | show 🗑
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| show | Protons and electrons
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| show | The sum of the number of protons in the nucleus.
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| show | Velocity
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| The octet rule states that any atom cannot have more than 8 orbiting shells. | show 🗑
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| show | 18
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| A proton is roughly _____ times larger than an electron. | show 🗑
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| There are two forces, the first is the attractive electrostatic force and that pulls the electron towards the nucleus and the _____ pulls the electron away from the nucleus and prevents the electron from moving closer to the nucleus. | show 🗑
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| When 2 or more atoms are chemically united, they form a/an: | show 🗑
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| One kilogram is equal to: | show 🗑
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| The current model of the atom that is considered most representative to the structure of matter is the: | show 🗑
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| show | Protons and Neutrons
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| The binding energy that holds an electron in its shell around an atom: | show 🗑
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| What is the maximum number of electrons that can orbit in the P-shell if the P-shell is not the outermost shell of that atom? | show 🗑
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| show | angstroms
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| If the N shell of an electron orbit is the outermost shell, what is the maximum number of electrons that you will find in that shell? | show 🗑
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| In the United States, the standard current that comes into our homes is: | show 🗑
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| show | Resistance
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| show | Increase conductor length, decrease diameter of tube, increase in temperature.
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| show | Gold
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| show | The Watt
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| show | 1 ampere flowing with a pressure of one volt.
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| show | P = V x I
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| show | True
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| One kilovolt equals how many volts | show 🗑
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| show | .4
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| What is voltage if the current is 30 amperes and the resistance is 10? | show 🗑
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| What is the amperage if you have 20 kilovolts and a resistance of 30. | show 🗑
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| show | 1,000 ohms
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| How many milliamps are in an Ampere | show 🗑
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| show | Voltage
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| show | On the outside surface at an area of sharpest curvature.
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| show | 1 coulomb flowing per second
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| 66 kilovolts carrying 500 amperes will have a resistance of: | show 🗑
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| show | Resistance
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| show | 24 ampere
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| According to the Laws of Electrostatics, unlike charges will repel one another. | show 🗑
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| Unlike charges ____ each other | show 🗑
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| show | Ampere
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| A semiconductor can be classified as: | show 🗑
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| If the electricity to your home costs $.75 per kilowatt hour and you operate a 2000 watt vacuum cleaner for 30 minutes, what is your cost for this period of time? | show 🗑
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| show | True
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| Electric power (the watt) is determined by the formula: | show 🗑
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| show | True
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| Objects can be electrified by one of three methods. What are these methods | show 🗑
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| Resistance is: | show 🗑
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| According to ohm’s law, the current in a circuit with 10,000 volts and a resistance of 50 ohms is: | show 🗑
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| The relationship between current and a changing magnetic field is called: | show 🗑
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| show | False
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| What type of transformer runs on Self Induction | show 🗑
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| It is possible to step-up both the voltage and amperage together with a transformer. T/F | show 🗑
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| show | Step Down
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| If you Increase voltage from the primary side to the secondary side of the transformer it is a ___ transformer | show 🗑
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| show | Ferromagnetic
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| A device that converts mechanical energy to electrical energy is called a/an: | show 🗑
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| A device that converts electrical energy into mechanical is called a/an: | show 🗑
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| show | autotransfomer
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| You have a current of 100 volts and 2 amperes on the primary side of your autotransformer. In order to get 10 amperes on the secondary side of your transformer, you must _______ the voltage to ______ volts. | show 🗑
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| A series of coils of wire within proximity of each other will create a combined magnetic field that can be used as a tool. This device is known as a _______. | show 🗑
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| If the current on the primary side of your step-down transformer is 10,000 volts and the current on the secondary side is 500 volts, how many coils are located in the secondary side if the primary side of the transformer has 100 coils? | show 🗑
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| . A device that can take a DC current and turn it on and off several times per second in order to create an AC current is called a/an: | show 🗑
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| show | Capacitor
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| Rectification of AC current is necessary for: | show 🗑
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| show | dipoles
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| If a material has high permeability (easily magnetized), it will have ______ retentivity. | show 🗑
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| show | Inversely
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| The input watts on the primary side of a transformer should equal the output watts on the secondary side of that transformer. | show 🗑
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| The type of magnet that is produced by heating an alloy within a strong magnetic field is: | show 🗑
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| show | False
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| show | 8000 W
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| Half wave rectification of the power coming into an x-ray machine will utilize only 50% of the incoming power.T/F | show 🗑
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| What is the cost to run your hairdryer if it uses 1500 watts and you operate it for 15 minutes. The electric co charges you 80 cents per kilowatt hour? | show 🗑
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| show | Half the speed of light
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| show | OSL
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| show | electrons
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| show | O shell to K shell
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| At a setting of 68 kVp with a tungsten anode, the percentage of your beam is composed of characteristic x-rays is: | show 🗑
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| Tungsten atoms have ___ electrons orbiting their nuclei. | show 🗑
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| The type of radiation that is produced by an incident electron interacting with the nuclei of a target atom is: | show 🗑
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| show | OSL
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| show | 18 keV
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| show | Geiger-Mueller survey instrument
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| If during a procedure, a patient's skin started turning red from a prolonged exposure, this would be considered a _______ effect. | show 🗑
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| show | The efficiency in which photons are produced.
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| An alpha particle is composed of : | show 🗑
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| show | 0.08 keV
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| show | 4
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| If the leakage radiation measured at 2 meters from the tube housing is 80 mR/hr, what is it if it's measured at 1 meter from the housing? | show 🗑
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| Total filtration is a combination of | show 🗑
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| . A technique used at 40" will need to be increased by a factor of ____ if the distance is doubled. | show 🗑
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| A technique of 75 kVp at 24 mAs W/ 80" SID needs to be changed to an SID of 20”. Your new technique should be: | show 🗑
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| show | Light
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| The prime factors that control quantity and are controlled by the technologist are | show 🗑
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| A known technique of 110 kVp and 8 mAs worked well for a chest x-ray done at 40" on a large patient. If the distance needed to be increased to 66", your new technique should be 110 kVp at ____ mAs. | show 🗑
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| Which of the following techniques will equal a change in density by a factor of 4 by employing the 15% rule? Your original technique was 80 kVp at 8 mAs. | show 🗑
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| The Reciprocity Law basically states that any combination of mA and time that equal the same mAs will create the same density on a radiograph when all other factors are the same. | show 🗑
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| When using a compensating filter, the thinnest part of the filter should be in-line with the thickest part of the body part.T/F | show 🗑
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| To reduce the attenuation of soft x-rays, mammography tubes use: | show 🗑
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| The atomic # for Al is: | show 🗑
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| show | 7.2
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| A good technique done at 60" is 85 kVp at 8 mAs. If you were to decrease your distance to 40" and not change the kVp, your new mAs should be: | show 🗑
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| show | 2.5mm al/Eq
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| When altering techniques for increases or decreases in density, the primary controller of x-ray intensity is kVp and the 15% rule should be employed before changing the mAs.T/F | show 🗑
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| show | The average energy of the beam increases.
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| show | I2 =I1(d1/d2)squared
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| The type of interaction that produces two photons of 0.51 Megavolts is: | show 🗑
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| show | Photoelectric
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| show | Comptons
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| show | photodisinigration
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| Hydrogen, carbon, and oxygen all have K-shell binding energies of: | show 🗑
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| show | Back scatter
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| show | 26 keV
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| During a compton's interaction, the incident photon will continue on after the interaction in another direction with a higher frequency and shorter wavelength.T/F | show 🗑
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| In the diagnostic imaging range, most of the photons that strike the patient are: | show 🗑
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| show | True
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| show | Pair Production
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| The type of interaction that involves an outer shell electron, an incident photon and causes scatter radiation that is ionizing to the patient and anyone else standing nearby is: | show 🗑
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| show | Increases
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| show | True
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| What is the unit of mass | show 🗑
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| 1 kilogram equals ___grams | show 🗑
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| When two or more atoms are chemically united they form a : | show 🗑
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| show | gas/steam
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| What is the unit of energy | show 🗑
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| show | A proton and nucleus
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| show | subnuclear structures in protons and neutrons
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| What contains no charge and is thought of to be electronically neutral? | show 🗑
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| show | Neutral
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| show | isotope
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| show | ion
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| When an electron is added to an atom it becomes ____ ion | show 🗑
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| show | positive
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| show | The attractive electrostatic force and The centrifugal force
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| show | 2n^2
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| What is the maximum number of electrons that can be in the L shell? | show 🗑
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| show | 98
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| What is the maximum number of electrons that can be in the N shell? | show 🗑
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| show | greater
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| Electrical energy or electricity is the result of the movement of electrons. T/F | show 🗑
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| Gamma rays originate from: | show 🗑
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| show | x-ray tube
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| If the frequency of an x-rays doubled, the energy is ____ | show 🗑
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| show | True
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| objects can be electrified by three methods: | show 🗑
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| what are the materials that easily permit electrons to flow facilitate the movement of electrons | show 🗑
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| Nonconducting materials are _____ | show 🗑
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| show | High, low
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| show | True
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| show | The ampere
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| show | 1coloumb/per second
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| show | The ohm
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| show | 2
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| Let's do another one: what is the voltage in a circuit of 100 amperes and 5 ohms? | show 🗑
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| show | 400,000 ohms
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| what is the power rating, in kilowatts, of an x-ray generator capable of 800 mA at 100 kV? | show 🗑
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| show | True
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| The force fields that are created when magnetic dipoles orient to create a magnet are called lines of ____, lines of ____ or the _____ | show 🗑
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| The SI unit for magnetic flux is the ___ | show 🗑
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| _____are created when iron oxide remains in the earth's magnetic field for ages, slowly orienting the magnetic dipoles in the same direction. | show 🗑
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| show | electromagnets
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| When a non-magnetized iron bar is brought within the lines of force of a strong magnet, the dipoles will temporarily align themselves with the lines of force passing through the iron bar, this describes ___ | show 🗑
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| Adding ferromagnetic materials _____magnetivity | show 🗑
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| show | diamagnetic
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| show | Paramagnetic, Aluminum & Platinum
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| show | plastic, wood,glass and rubber
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| if a transformer is supplied with 400 V to the primary coil, has 100 turns of wire on the primary coil, and 20,000 turns of wire on the secondary coil, what will the voltage be in the secondary coil? | show 🗑
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| If a transformer has 120 turns of wire on the primary coil, 80 V in the primary coil, and 120 V in the secondary coil, how many turns of wire must there be in the secondary coil? | show 🗑
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| Transformers can only work on ____ current | show 🗑
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| show | 4
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| what is the dmf | show 🗑
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| show | New intensity = old intensity (D1/D2)^2
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| show | V2/V1= N2/N1
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| show | V=IxR
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| show | C 6
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| show | O 8
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| What is the Atomic number of molybdenum | show 🗑
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| What is the Atomic number of Calcium | show 🗑
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| show | Rn 86
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| What is the Atomic number of barium | show 🗑
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| What is the Atomic number of aluminum | show 🗑
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| What is the Atomic number of iodine | show 🗑
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| show | Pb 82
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| show | W 74
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| If your beam energy is 70 kvp or above how much of your beam is composed of Characteristic and Bremsstruhlung | show 🗑
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| show | 2.5
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| show | 10 mm or 1/100 meter
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| Nearly all x-ray equipment operates from incoming line of _____ | show 🗑
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| show | With single-phase half-wave rectification, photon production starts and stops 60 times a second. Productive 50% of the time.
Full-wave rectification starts and stops 120 times a second but is producing photons almost 100% of the time.
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| Generators must terminate the exposure at ___mAs for exposures above 50 KVP | show 🗑
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| Generators must terminate the exposure at ____ mAs for exposures below 50 KVP. | show 🗑
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| show | stator
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| show | Angstrom
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| If you increase frequency you are ____ wavelength | show 🗑
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| A filament is composed of? | show 🗑
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| What is a focusing cup made out of? | show 🗑
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| show | 69.5 kev
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| show | 330 watts
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| show | AC & DC
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| What is the device used to increase or decrease the voltage and amperage in an alternating current | show 🗑
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| a full wave rectified current will turn on and off ___ times per second | show 🗑
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| show | DC
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| show | filament current
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| in older machines, valve tubes were used to... | show 🗑
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| 80 kv and 200 mA = ____ ohms | show 🗑
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| show | Step Up
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| Is the conversion of voltage in a transformer proportional to the ratio of coils? | show 🗑
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| What is the unit of measurement for large magnets? | show 🗑
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| What is the unit of measurement for small magnets? | show 🗑
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| show | 10,000
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| show | Grid controlled/grid biased tube
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| What do you call the electromagnets that drive the rotor? | show 🗑
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| show | Molybdenum
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| show | .25 or 1/4th the speed
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| Hand x-ray used 55 kvp @ mAs on a 400 speed cassette. What if I used a 200 speed cassette. 55 kvp @ ___ mAs | show 🗑
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| show | 15,360
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| show | 25 mR/HR
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| show | 200 mR/HR
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| 400 mA at 1/5th a second = ___ mAs | show 🗑
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| show | 375
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| 500 mAs for 1/10th of a second = ____ mAs | show 🗑
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| show | .8 mAs
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| show | 27,720
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| 3phase (1.35) 7 exp. of 65 kVp at 10 mAs + 7 exp. of 76 kVp @ 12 mAs | show 🗑
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| If a single photon has 41 keV of energy is it Bremsstruhlung or Characteristic? | show 🗑
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| What is the maximum characteristic photon (keV) produced by a tungsten target | show 🗑
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| Which end of the tube is positive and which end is negative? | show 🗑
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| What does OSL stand for? | show 🗑
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| Ring badges are TLDs or OSLs | show 🗑
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| Film Badges are TLDs or OSLs | show 🗑
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| AC current in the US flows at a rate of ___ Hertz | show 🗑
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| show | 6
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| Odontoids use 74 kVp at 20 mAs at 40". How much would you use if your SID was 12" | show 🗑
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| show | 240
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| show | 3.24
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|
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| You produce a good xray at 40" using 66 kVp at 10 mAs. What mAs should you use if this was done at 60"? | show 🗑
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| show | 62.72
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|
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| 100 cm is approximately ____ inches | show 🗑
|
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| show | half
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| show | Off level and Off Center
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| show | Increases
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| You can use an angle on a grid if you ____ | show 🗑
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| Shoulder with a 6:1 grid was 18mAs. How much without a grid. | show 🗑
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| Pelvis without a grid was 10 mAs, how much would you use with a 8:1 grid. | show 🗑
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| show | 8:1
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| Linear focused Grid cannot be used ____ | show 🗑
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| show | Cross-hatched
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| show | DAC (digital to analog converter)
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| show | Intranet
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| Conversion of an image into digital data requires the use of the: | show 🗑
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| show | RIS
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|
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| show | True
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|
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| show | (CAD) Computer Aided Diagnosis
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|
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| Two popular types of compression used to send images quickly are: | show 🗑
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| show | False, They have worse, but can make it up via post-processing
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|
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| show | HIS
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|
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| DICOM is used to send images to and from PACS. What is the software used to send text between the RIS and HIS? | show 🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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