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ESSENTIALS OF RADIOGRAPHIC PHYSICS AND IMAGING CHAPTER 4|ACTUAL QUESTIONS WITH ANSWERS 2026

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ESSENTIALS OF RADIOGRAPHIC PHYSICS AND IMAGING CHAPTER 4|ACTUAL QUESTIONS WITH ANSWERS 2026

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ESSENTIALS OF RADIOGRAPHIC
PHYSICS AND IMAGING CHAPTER
4|ACTUAL QUESTIONS WITH ANSWERS
2026




What is the role of a vacuum tube in x-ray production? - correct-answer -

Electrons jump the gap between oppositely charged electrodes.




What is a good example of a conductor? - correct-answer -Copper.




What are the two types of electric current? - correct-answer -Direct current (DC)

and alternating current (AC).




How does direct current (DC) flow? - correct-answer -In only one direction.

, 2|Page




What is alternating current (AC)? - correct-answer -Current that changes direction

in cycles as the electric potential changes.




At what frequency does electricity alternate in the United States? - correct-

answer -60 cycles per second (60 Hz).




What does Ohm's law express? - correct-answer -The relationship among voltage,

current, and resistance (V = IR).




What is resistance measured in? - correct-answer -Ohms.




What does Ohm's law state? - correct-answer -The potential difference across a

circuit is equal to the current multiplied by the resistance (V = IR).

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