Which term describes the flow of electric charge in a circuit?

Which term describes the flow of electric charge in a circuit?

• A. Voltage
• B. Current
• C. Resistance
• D. Power

Answer: (B)

Current is the flow of electric charge in a circuit. It measures how much charge passes a point per unit time, with the symbol I and units of amperes (A), where one ampere means one coulomb of charge moving each second. This flow is governed by I = dQ/dt, showing it's about the rate of charge movement rather than just the presence of charge. Voltage is the driving force that pushes charges to move, not the flow itself. Resistance is what limits how much current flows for a given voltage, described by Ohm’s law as I = V/R. Power is the rate at which electrical energy is transferred or consumed, given by P = VI or, in terms of current and resistance, P = I^2R. In many circuits, conventional current is considered to flow from higher potential to lower potential, even though actual charge carriers (electrons) move in the opposite direction.

Current is the flow of electric charge in a circuit. It measures how much charge passes a point per unit time, with the symbol I and units of amperes (A), where one ampere means one coulomb of charge moving each second. This flow is governed by I = dQ/dt, showing it's about the rate of charge movement rather than just the presence of charge.

Voltage is the driving force that pushes charges to move, not the flow itself. Resistance is what limits how much current flows for a given voltage, described by Ohm’s law as I = V/R. Power is the rate at which electrical energy is transferred or consumed, given by P = VI or, in terms of current and resistance, P = I^2R.

In many circuits, conventional current is considered to flow from higher potential to lower potential, even though actual charge carriers (electrons) move in the opposite direction.