Which subatomic particle carries a negative electrical charge?

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Explore the ADAA Intro to Basic Concepts in Dental Radiology Test. Prepare with flashcards and multiple-choice questions. Master radiology concepts for certification!

Multiple Choice

Which subatomic particle carries a negative electrical charge?

Explanation:
Electrons have negative electrical charge. They are the subatomic particles that orbit the nucleus. Protons carry a positive charge and reside in the nucleus, neutrons have no charge, and a positron is the positively charged antimatter counterpart of the electron. Therefore, the particle that carries negative charge is the electron. In dental radiology, this matters because X-ray production involves accelerating electrons toward the anode, and tissue ionization occurs when electrons are ejected from atoms.

Electrons have negative electrical charge. They are the subatomic particles that orbit the nucleus. Protons carry a positive charge and reside in the nucleus, neutrons have no charge, and a positron is the positively charged antimatter counterpart of the electron. Therefore, the particle that carries negative charge is the electron. In dental radiology, this matters because X-ray production involves accelerating electrons toward the anode, and tissue ionization occurs when electrons are ejected from atoms.

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