What is the equivalent of 1 ampere in terms of coulombs?

Gain the confidence you need for the SQA National 5 Physics Exam with our comprehensive quiz. Test yourself with multiple choice questions that include hints and explanations. Be prepared and succeed in your exam!

An ampere, which is the unit of electric current, is defined in terms of the flow of electric charge. Specifically, 1 ampere is equivalent to the flow of 1 coulomb of charge per second. This relationship is derived from the definition of current, where current (I) is defined as the charge (Q) that passes through a conductor in a given amount of time (t), expressed mathematically as I = Q/t.

In this context, since 1 ampere means 1 coulomb of charge moves through a point in the circuit every second, the correct choice clearly states that 1 ampere equals 1 coulomb per second. Other choices, such as coulombs per hour, minute, or millisecond, do not align with this definition because they describe flow rates over different time intervals, which do not equate to the standard definition of an ampere.

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