What is the formula for calculating electrical energy consumption?

The formula for calculating electrical energy consumption is derived from the relationship between power, time, and energy. In this context, energy consumption is measured in kilowatt-hours (kWh), power is expressed in kilowatts (kW), and time is measured in hours (h).

The correct formulation states that energy (in kWh) is equal to the power (in kW) multiplied by the time (in hours). This means that if you know the power consumption of an electrical device and the duration for which it operates, you can easily calculate the total energy consumed.

For example, if a device operates at a power level of 2 kW for 3 hours, the energy consumed can be calculated as follows:

Energy = Power × Time,

Energy = 2 kW × 3 h = 6 kWh.

This relationship is foundational in understanding energy use and is widely used in electrical engineering and related fields for calculating utility costs and energy efficiency.

Other formulations provided do not correctly reflect the relationship between power, time, and energy. Adding or subtracting time from power does not yield a valid measurement of energy consumption. Similarly, dividing power by time does not yield energy, as energy is directly related to the