In what unit is electrical current measured?

Study for the NCEA Level 2 Electricity Exam. Prepare with flashcards and multiple-choice questions; each question has hints and explanations. Get ready for your exam!

Electrical current is measured in amperes, often abbreviated as "A." The ampere is the unit that quantifies the flow of electric charge in a circuit. To understand this better, consider that current represents the rate at which charge is flowing through a conductor. Specifically, one ampere is defined as one coulomb of charge passing through a point in a circuit per second.

The other units mentioned serve different functions in the realm of electricity. Ohms (Ω) measure resistance, indicating how much a material opposes the flow of current. Volts (V) measure electric potential or voltage, which can be thought of as the pressure that drives current through a circuit. Coulombs (C), on the other hand, are a unit of electric charge and quantify the total quantity of electrons flowing, rather than the flow rate of current itself. Thus, amperes are specifically the appropriate unit for measuring electrical current.

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