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Watt and kilowatt hour are both units of measurement used in the world of electricity and energy.
Watt, named after the Scottish engineer James Watt, is a unit of power in the International System of Units (SI). It represents the rate of energy transfer or conversion. If a device has a power of 1 watt, it means that it consumes 1 joule of energy per second. Power is often used to indicate the capacity of devices such as lamps and heating systems.
For example, a 100 watt lamp consumes 100 joules of energy per second. The higher the number of watts, the more energy the device consumes per second.
Kilowatt hour, on the other hand, is a unit of energy. It is the amount of energy consumed when a device that consumes 1 kilowatt (or 1000 watts) is used for one hour. This unit is often used on electricity bills, as it is a way to measure energy consumption over a certain period. One kilowatt hour is equivalent to 3.6 million joules.
For example, if a 100 watt lamp burns for 10 hours, then it consumes 1 kilowatt hour (kWh) of energy (100 watts * 10 hours = 1000 watt hours = 1 kWh).
In short, watt measures the rate of energy consumption, while kilowatt hour measures the total amount of energy consumed over a certain period.