What describes the force that pushes current through a circuit?

What describes the force that pushes current through a circuit?

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

Answer: (A)

Voltage describes the driving force that pushes electric charges around a circuit. It represents the potential difference provided by a source, like a battery, and acts as the “pressure” that moves electrons from higher to lower potential. The actual flow of charges is current, and it depends on the circuit’s resistance via Ohm’s law: I = V / R. So increasing voltage (with the same resistance) raises the current, while increasing resistance (with the same voltage) lowers it. Power describes how quickly energy is delivered (P = V × I), which depends on both voltage and current.

Voltage describes the driving force that pushes electric charges around a circuit. It represents the potential difference provided by a source, like a battery, and acts as the “pressure” that moves electrons from higher to lower potential. The actual flow of charges is current, and it depends on the circuit’s resistance via Ohm’s law: I = V / R. So increasing voltage (with the same resistance) raises the current, while increasing resistance (with the same voltage) lowers it. Power describes how quickly energy is delivered (P = V × I), which depends on both voltage and current.