What formula is used to calculate total energy consumption in kilowatt-hours?

The formula for calculating total energy consumption in kilowatt-hours is derived from the relationship between power, time, and energy. Power is measured in kilowatts (kW), and energy consumption is expressed in kilowatt-hours (kWh), which combines both the power used and the duration over which it is used.

The correct formula states that energy consumption in kilowatt-hours is calculated by multiplying power in kilowatts by time in hours. This makes sense because kilowatt-hours represent the amount of energy consumed when a device uses one kilowatt of power for one hour. By using this formula, you can easily determine the energy consumption of any electrical device simply by knowing its power rating and the amount of time it operates.

In contrast, the other choices either use incorrect units or mix measurements in a way that does not yield the desired results in kilowatt-hours. For example, using seconds instead of hours does not reflect the standard unit of energy consumption.