Electrical Currents Quiz

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Which two particles make up the nucleus of an atom?

Electrons and protons

Protons and neutrons (correct)

Protons and nucleons

Neutrons and electrons

What is the maximum number of electrons that the K shell can hold?

8

32

18

2 (correct)

What is the binding energy of an electron determined by?

The distance between the nucleus and the electron (correct)

The energy level of the shell

The number of electrons in the atom

The number of neutrons in the nucleus

Which interaction accounts for the majority of scatter radiation at the atomic level?

Compton scatter Signup and view all the answers

What percentage of the interactions of the dental x-ray beam with matter does the photoelectric effect account for?

30% Signup and view all the answers

What happens to the energy of an x-ray photon after it undergoes Compton scatter?

It is transferred to other atoms until all its energy is gone Signup and view all the answers

Which type of current describes an electrical current in which the electrons flow in two, opposite directions?

Alternating current (AC) Signup and view all the answers

What is the measurement of the number of electrons moving through a conductor?

Amperage Signup and view all the answers

What is the measurement of electrical force that causes electrons to move from a negative pole to a positive one?

Voltage Signup and view all the answers

What is the purpose of a step-up transformer in the production of dental x-rays?

To increase the voltage from the incoming line voltage to the high-voltage circuit Signup and view all the answers

Which of the following statements about wavelength and frequency is true?

Wavelength and frequency are inversely related. Signup and view all the answers

What determines the energy and penetrating power of radiation?

Wavelength Signup and view all the answers

Which of the following has a longer wavelength and less energy?

Low-frequency electromagnetic radiations Signup and view all the answers

What is the purpose of the lead collimator in the x-ray tubehead?

To restrict the size of the x-ray beam Signup and view all the answers

Which type of radiation is capable of producing ions by removing or adding an electron to an atom?

X-rays Signup and view all the answers

What are cathode rays?

Streams of high-speed electrons that originate in an x-ray tube Signup and view all the answers

What are protons?

Accelerated particles with a mass of 1 and a charge of +1 Signup and view all the answers

What are neutrons?

Accelerated particles with a mass of 1 and no electrical charge Signup and view all the answers

Which type of radiation accounts for approximately 70% of the x-ray energy produced at the anode?

General radiation Signup and view all the answers

Which type of radiation is produced when a high-speed electron dislodges an inner-shell electron from the tungsten atom and causes ionization of that atom?

Characteristic radiation Signup and view all the answers

Which type of radiation refers to the penetrating x-ray beam that is produced at the target of the anode and that exits the tubehead?

Primary radiation Signup and view all the answers

Which type of radiation is a form of secondary radiation and is the result of an x-ray that has been deflected from its path by the interaction with matter?

Scatter radiation Signup and view all the answers

Which two particles make up the nucleus of an atom?

Protons and neutrons Signup and view all the answers

What is the maximum number of electrons that the K shell can hold?

2 Signup and view all the answers

What is the purpose of the lead collimator in the x-ray tubehead?

To collimate the x-ray beam Signup and view all the answers

Which type of radiation can be defined as the propagation of wavelike energy (without mass) through space or matter?

Gamma rays Signup and view all the answers

What is the measurement of the distance between the crest of one wave and the crest of the next?

Wavelength Signup and view all the answers

Which type of radiation is capable of producing ions by removing or adding an electron to an atom?

Beta particles Signup and view all the answers

What is the measurement of the number of electrons moving through a conductor?

Current Signup and view all the answers

Which type of radiation accounts for the majority of scatter radiation at the atomic level?

Compton scatter Signup and view all the answers

What percentage of the interactions of the dental x-ray beam with matter does the photoelectric effect account for?

30% Signup and view all the answers

What happens to the energy of an x-ray photon after it undergoes Compton scatter?

It is deflected and loses some energy Signup and view all the answers

Which part of the x-ray tubehead surrounds the x-ray tube and transformers and is filled with oil?

Metal housing Signup and view all the answers

What is the purpose of the insulating oil in the x-ray tubehead?

To prevent overheating by absorbing the heat created by the production of x-rays Signup and view all the answers

Which part of the x-ray tubehead permits the exit of x-rays and seals the oil in the tubehead?

Tubehead seal Signup and view all the answers

What is the purpose of the lead collimator in the x-ray tubehead?

To restrict the size of the x-ray beam Signup and view all the answers

Which type of electrical current describes an electrical current in which the electrons flow in one direction through the conductor?

Direct current (DC) Signup and view all the answers

What is the purpose of a step-down transformer in the production of dental x-rays?

To decrease the voltage from the incoming line voltage to the 3 to 5 V used by the filament circuit Signup and view all the answers

What is the measurement of electrical force that causes electrons to move from a negative pole to a positive one?

Voltage Signup and view all the answers

What is the purpose of the autotransformer in the production of dental x-rays?

To correct for minor fluctuations in the current Signup and view all the answers

Which type of radiation is responsible for producing densities and making dental radiography possible?

Primary radiation Signup and view all the answers

What is the term for x-radiation that is created when the primary beam interacts with matter?

Secondary radiation Signup and view all the answers

Which interaction at the atomic level occurs as a result of the photoelectric effect?

Absorption Signup and view all the answers

Which type of radiation accounts for a very small part of x-rays produced in the dental x-ray machine and occurs only at 70 kV and above?

Characteristic radiation Signup and view all the answers

Electrical Currents Quiz

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Questions and Answers

Which two particles make up the nucleus of an atom?

What is the maximum number of electrons that the K shell can hold?

What is the binding energy of an electron determined by?

Which interaction accounts for the majority of scatter radiation at the atomic level?

What percentage of the interactions of the dental x-ray beam with matter does the photoelectric effect account for?

What happens to the energy of an x-ray photon after it undergoes Compton scatter?

Which type of current describes an electrical current in which the electrons flow in two, opposite directions?

What is the measurement of the number of electrons moving through a conductor?

What is the measurement of electrical force that causes electrons to move from a negative pole to a positive one?

What is the purpose of a step-up transformer in the production of dental x-rays?

Which of the following statements about wavelength and frequency is true?

What determines the energy and penetrating power of radiation?

Which of the following has a longer wavelength and less energy?

What is the purpose of the lead collimator in the x-ray tubehead?

Which type of radiation is capable of producing ions by removing or adding an electron to an atom?

What are cathode rays?

What are protons?

What are neutrons?

Which type of radiation accounts for approximately 70% of the x-ray energy produced at the anode?

Which type of radiation is produced when a high-speed electron dislodges an inner-shell electron from the tungsten atom and causes ionization of that atom?

Which type of radiation refers to the penetrating x-ray beam that is produced at the target of the anode and that exits the tubehead?

Which type of radiation is a form of secondary radiation and is the result of an x-ray that has been deflected from its path by the interaction with matter?

Which two particles make up the nucleus of an atom?

What is the maximum number of electrons that the K shell can hold?

What is the purpose of the lead collimator in the x-ray tubehead?

Which type of radiation can be defined as the propagation of wavelike energy (without mass) through space or matter?

What is the measurement of the distance between the crest of one wave and the crest of the next?

Which type of radiation is capable of producing ions by removing or adding an electron to an atom?

What is the measurement of the number of electrons moving through a conductor?

Which type of radiation accounts for the majority of scatter radiation at the atomic level?

What percentage of the interactions of the dental x-ray beam with matter does the photoelectric effect account for?

What happens to the energy of an x-ray photon after it undergoes Compton scatter?

Which part of the x-ray tubehead surrounds the x-ray tube and transformers and is filled with oil?

What is the purpose of the insulating oil in the x-ray tubehead?

Which part of the x-ray tubehead permits the exit of x-rays and seals the oil in the tubehead?

What is the purpose of the lead collimator in the x-ray tubehead?

Which type of electrical current describes an electrical current in which the electrons flow in one direction through the conductor?

What is the purpose of a step-down transformer in the production of dental x-rays?

What is the measurement of electrical force that causes electrons to move from a negative pole to a positive one?

What is the purpose of the autotransformer in the production of dental x-rays?

Which type of radiation is responsible for producing densities and making dental radiography possible?

What is the term for x-radiation that is created when the primary beam interacts with matter?

Which interaction at the atomic level occurs as a result of the photoelectric effect?

Which type of radiation accounts for a very small part of x-rays produced in the dental x-ray machine and occurs only at 70 kV and above?

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