How do you calculate electrical energy consumption?

Electrical energy consumption is calculated by multiplying the power of the device (in watts) by the time it's used (in hours).

To understand this in more detail, let's break it down. Electrical energy is measured in kilowatt-hours (kWh). One kilowatt-hour is the amount of energy a device using one kilowatt of power would consume in one hour. So, if you know the power of the device in kilowatts (kW) and the time it's used in hours (h), you can calculate the energy consumption by multiplying these two values together.

For example, if you have a 100-watt light bulb and you leave it on for 10 hours, you would first need to convert the power to kilowatts. Since 1 kilowatt is equal to 1000 watts, you would divide 100 by 1000 to get 0.1 kW. Then, you multiply this by the time the bulb is on (10 hours) to get 1 kWh. This means the light bulb uses 1 kilowatt-hour of energy if it's left on for 10 hours.

It's important to note that the power of a device is the rate at which it uses energy, and it's usually given in the device's specifications. The time is how long the device is used, and it can vary depending on the user. By multiplying these two values together, you can find out how much energy a device uses over a certain period of time, which can be useful for understanding your energy usage and potentially reducing your energy bills.

Remember, the formula to calculate electrical energy consumption is: Energy (kWh) = Power (kW) x Time (h).