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Very often in advertising literature and on the web we meet a kWh measurement unit.  What does this unit mean? Each of us, looking closely at the electricity bill, will notice that there is a kWh, not a kW/h.
Let’s figure it out. The unit of measurement for energy (or Work in physics) is Joule (or shorter J).

1 Joule = 1 Newton × 1 Meter

It is for this consumed electricity that we get bills. The power of electrical equipment is characterized how much energy is they consumed during the unit time.

1 W =   1 J ×1 sec

As you can see, the Energy can be defined as 1 J = 1 Watt × 1 sec. That is, the energy consumed is characterized by the power of the electrical equipment and its operating time. However, since “Watt × Sec” is very small, it is easier to calculate the power consumption rather than “Watt × sec”, but “kW×Hour” and this unit is called «kilowatt-hour» or kWh.

1 kWh = 1000 Watt × 3600 sec   = 3 600 000 Joule

So, the “unit” of 1kW/h does not make any sense, at least it cannot in any way describe energy consumption, this value rather characterizes the change in the power of the device (if it is capable of changing) per unit time. If someone is interested in such a characteristic, please continue to think like this. Compared to more understandable values such as length and speed, the difference between kWh and kW/h is the same as between length and acceleration. 