Which physical quantity is measured in the unit of kilowatt-hour (kWh)?

💡 Solution & Explanation

Kilowatt-hour is the commercial unit of electrical energy consumed in households and industries, representing the work done by a power of one kilowatt operating for one hour. Power is measured in watts or kilowatts, whereas energy is the time integral of power. Misidentifying this as electric power arises from the prefix kilo-watt, but the time factor hour converts it into a joule-equivalent quantity where one kilowatt-hour equals 3.6 million joules.