Question

Kilowatt is the unit of electrical _______ but kilowatt-hour is the unit of electrical _______.

• A. Power, Energy
• B. Power, Electric potential
• C. Power, Current
• D. Energy, Power

Answer 1

The correct option is A Power, Energy

In SI system, unit of power is Watt (W). Kilowatt is equal to one thousand (${10}^3$) watts. The kilowatt-hour is a unit of energy and is equal to 1,000 watt-hours. If the energy is being transmitted or used at a constant rate (power) over a period of time, the total energy in kilowatt-hours is the product of the power in kilowatts and the time in hours.