Can someone please help me understand how I figure out how much electricity I used when using a small appliance (lets say 300 watts. For the duration of 3 hours? Does anyone know the formula to figure this out?
Yes, I can help you with that! To calculate the amount of electricity used by a small appliance, you need to use the formula:
Energy (in kilowatt-hours) = Power (in kilowatts) × Time (in hours)
In your case, the power of the appliance is 300 watts, which is equivalent to 0.3 kilowatts (since 1 kilowatt = 1000 watts). The time the appliance was used is 3 hours.
Using the formula, you can calculate the energy consumption as follows:
Energy = Power × Time
Energy = 0.3 kW × 3 hours
Energy = 0.9 kilowatt-hours (kWh)
Therefore, the small appliance used 0.9 kilowatt-hours of electricity during the three-hour period.
Keep in mind that this formula assumes a constant power consumption throughout the duration of use. In reality, some appliances may vary in power usage over time.