Voltage is also known as electromotive force (EFM) or potential difference. Which term best completes the phrase to identify voltage?

Voltage is also known as electromotive force (EFM) or potential difference. Which term best completes the phrase to identify voltage?

• A. Potential difference
• B. Power
• C. Resistance
• D. Inductance

Answer: (A)

Voltage is the electric pressure that pushes charge, which is defined as the potential difference between two points in a circuit. Therefore, the term that best completes the phrase is “potential difference,” since voltage and potential difference are two ways of describing the same quantity. The other terms describe different electrical properties: power is the rate of energy transfer, resistance is how much a component opposes current, and inductance is a property that stores energy in a magnetic field and resists changes in current. In sources like batteries, electromotive force is the energy per unit charge provided, but the voltage across circuit points is the potential difference between those points.

Voltage is the electric pressure that pushes charge, which is defined as the potential difference between two points in a circuit. Therefore, the term that best completes the phrase is “potential difference,” since voltage and potential difference are two ways of describing the same quantity. The other terms describe different electrical properties: power is the rate of energy transfer, resistance is how much a component opposes current, and inductance is a property that stores energy in a magnetic field and resists changes in current. In sources like batteries, electromotive force is the energy per unit charge provided, but the voltage across circuit points is the potential difference between those points.