Current is defined as:

Current is defined as:

• A. (Amperes) Electron flow past a reference point
• B. Electrical potential difference in volts
• C. The opposition to current
• D. The rate of energy transfer

Answer: (A)

Current is the rate at which electric charge passes a reference point in a circuit, and it is measured in amperes. In a metal conductor, the actual moving charges are electrons, so the current corresponds to electrons flowing past that point (even though traditional current direction is described as positive charge flow, electrons move opposite to that). The important idea is that current quantifies how much charge crosses a point per second, not the potential difference, the opposition to flow, or the rate at which energy is transferred. Voltage is the driving potential difference, resistance is what opposes the current, and power is the rate of energy transfer.

Current is the rate at which electric charge passes a reference point in a circuit, and it is measured in amperes. In a metal conductor, the actual moving charges are electrons, so the current corresponds to electrons flowing past that point (even though traditional current direction is described as positive charge flow, electrons move opposite to that). The important idea is that current quantifies how much charge crosses a point per second, not the potential difference, the opposition to flow, or the rate at which energy is transferred. Voltage is the driving potential difference, resistance is what opposes the current, and power is the rate of energy transfer.