Current is defined as what?

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Study for the Praxis Physics Exam with interactive questions and detailed explanations to enhance your understanding of physics concepts. Prepare for your exam efficiently!

Multiple Choice

Current is defined as what?

Explanation:
Electric current is the rate at which electric charge passes a point in a circuit. It is defined as the amount of charge Q that flows per unit time t, i.e., current = Q/t. This is what the ampere measures: 1 ampere = 1 coulomb per second. So current describes how much charge is moving per second, not how much energy each charge carries (that’s voltage), not the material’s resistance, and not the force that pushes the charges (the force initiates motion, current is the flow rate that results).

Electric current is the rate at which electric charge passes a point in a circuit. It is defined as the amount of charge Q that flows per unit time t, i.e., current = Q/t. This is what the ampere measures: 1 ampere = 1 coulomb per second. So current describes how much charge is moving per second, not how much energy each charge carries (that’s voltage), not the material’s resistance, and not the force that pushes the charges (the force initiates motion, current is the flow rate that results).

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