Which term describes the work per unit charge done to move electric charges between different parts of an electric field?

Which term describes the work per unit charge done to move electric charges between different parts of an electric field?

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

Answer: (A)

Voltage describes the work per unit charge required to move electric charges between different parts of an electric field. It tells you how much energy a charge would gain or lose as it travels from one point to another, measured in volts (joules per coulomb). This is why voltage is the right term: it specifically captures energy transfer per charge in the field. By contrast, current is the rate at which charges move, resistance is how much a material opposes that movement, and power is the rate at which energy is transferred (power equals voltage times current).

Voltage describes the work per unit charge required to move electric charges between different parts of an electric field. It tells you how much energy a charge would gain or lose as it travels from one point to another, measured in volts (joules per coulomb). This is why voltage is the right term: it specifically captures energy transfer per charge in the field. By contrast, current is the rate at which charges move, resistance is how much a material opposes that movement, and power is the rate at which energy is transferred (power equals voltage times current).