A Level Physics Practice Exam

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Study for the A Level Physics Exam. Our quiz features flashcards and multiple choice questions, each with hints and explanations. Prepare thoroughly!

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What is the unit of measure for charge in a particle?

Coulombs
Joules
Newtons
Amperes

The correct answer is: Coulombs

Coulombs is the correct unit of measure for electric charge in a particle. The coulomb, represented by the symbol 'C', quantifies the amount of electric charge carried by a certain number of elementary charges. Specifically, one coulomb is defined as the amount of charge transferred by a constant current of one ampere in one second. This makes the coulomb foundational in understanding electrical phenomena and the behavior of charged particles, providing a clear and standardized means to measure charge. The other units mentioned serve different purposes in physics. Joules measure energy, Newtons measure force, and Amperes measure the flow of electric current. Each of these units is crucial in their context, but they do not relate directly to the measurement of charge. Thus, when specifying the unit of electric charge in particles, coulombs is the unequivocal choice.