AAMC FL Practice Exam

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Study for the AAMC FL Exam. Prepare with comprehensive flashcards and multiple-choice questions, each equipped with hints and explanations. Gear up for your medical school entrance exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What is a characteristic of a photon?

It has a negative charge
It is positively charged
It has no charge
It has a variable charge

The correct answer is: It has no charge

Photons are elementary particles that are the quanta of electromagnetic radiation, including visible light. One of their defining characteristics is that they possess no electric charge. This means they do not interact with electric fields in the same way charged particles do, allowing them to travel through space without being affected by electric forces. This characteristic allows photons to freely propagate through a vacuum and different media. In contrast, the other answer choices inaccurately assign a charge to photons. The statements regarding negative charge, positive charge, or variable charge are all incorrect, as they suggest that photons have properties akin to charged particles, which they do not. Hence, the defining attribute of photons is their neutrality in terms of electric charge, firmly establishing that they have no charge at all.