Electric current is defined as the rate at which what flows?

Electric current is defined as the rate at which what flows?

• A. The rate of charge flow past a point per second
• B. Energy per unit charge
• C. The potential difference between two points
• D. The total charge stored in a conductor

Answer: (C)

Electric current is the rate at which electric charge flows. In other words, current equals the amount of charge that passes a point per unit time, I = dq/dt, and it is measured in amperes (1 ampere = 1 coulomb per second). This focuses on how much charge moves over time, not on energy or potential. Energy per unit charge is described by voltage (the electric potential difference). That quantity tells you how much energy each unit of charge has as it moves, not how much charge moves per second. The total charge stored in a conductor is simply the amount of charge present, not a rate. So the best description of current is the rate at which charge flows past a point per second.

Electric current is the rate at which electric charge flows. In other words, current equals the amount of charge that passes a point per unit time, I = dq/dt, and it is measured in amperes (1 ampere = 1 coulomb per second). This focuses on how much charge moves over time, not on energy or potential.

Energy per unit charge is described by voltage (the electric potential difference). That quantity tells you how much energy each unit of charge has as it moves, not how much charge moves per second. The total charge stored in a conductor is simply the amount of charge present, not a rate. So the best description of current is the rate at which charge flows past a point per second.