Electric current is quantified as what?

Electric current is quantified as what?

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

Answer: (C)

Electric current is the rate at which electric charge passes a fixed point in a circuit. It’s a flow quantity, like how much water moves by a point in a pipe per second. The idea is captured by I = dQ/dt, so current is coulombs per second, measured in amperes. This emphasizes flow over time, not how much charge is stored or how much energy a charge has. The potential difference between two points is voltage (energy per unit charge), and the total charge stored is simply the amount of charge, not the flow rate. So describing current as the rate of charge flow past a point per second is the best fit.

Electric current is the rate at which electric charge passes a fixed point in a circuit. It’s a flow quantity, like how much water moves by a point in a pipe per second. The idea is captured by I = dQ/dt, so current is coulombs per second, measured in amperes. This emphasizes flow over time, not how much charge is stored or how much energy a charge has. The potential difference between two points is voltage (energy per unit charge), and the total charge stored is simply the amount of charge, not the flow rate. So describing current as the rate of charge flow past a point per second is the best fit.