Question

Define one-watt hour and one-kilowatt hour.

Answer 1

Kilowatt-hour is expressed as the unit of energy. Electric energy is typically said to the customers in Kilowatt-hours. A watt-hour is expressed as the unit of energy. Electric appliances are typically said to the customers in watt-hours.

Complete step by step solution
The kilowatt-hour is expressed as the unit of energy. It is equal to Kilojoules. For example, it is used to calculate the unit of billing for electricity. A kilowatt-hour is a combination unit of energy and it is equal to the one Kilo-watt. Hour is the unit of time it is listed among the non-SI units. Energy is the delivery of the work. Power is the delivery of energy. It is measured in Kilowatts.

It is measured by the running time of the electrical device by multiplying the power consumption of the devices in kilowatts by the time of operation for the device it is measured in hours so we call it one kilowatt-hour. Generally, a one-kilowatt hour is for one hour it is consumed by the one unit of a charge. So one kilowatt-hour is the energy consumed when the one kilowatt of power is used for one hour.

Watt-hour is measured by using the amount of work performed or generated by electrical appliances. But other electrical devices perform the work and it requires energy in the form of electricity. So, a one-watt hour is energy consumed by the one watt of power it is used for one hour.

Note: One kilowatt is equal to the thousand watts of power, it is used for one hour. The kilowatt-hour is measured by the running time of the electrical device. Both the watts are measured by the running time of the devices but consumption of the power will change.