State three ways of conserving energy in the home.

An electrical appliance in the home uses 4000 W of electric power every 12 hours.

Calculate the energy used within this time.

Three ways to conserve energy at home include using energy-efficient appliances, implementing smart power strips, and improving home insulation. The energy used by a 4000 W appliance over 12 hours is 48 kWh, calculated using the formula Energy = Power × Time. Understanding energy conservation can lead to reduced bills and environmental impact.
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Answered by Anonymous | 2025-07-04

To conserve energy in the home, here are three effective strategies:

Use Energy-Efficient Appliances : Upgrade to appliances that have an Energy Star rating or those known for their energy-saving features. These appliances use less electricity while still performing their required functions effectively.

Insulate Your Home : Proper insulation helps to maintain a comfortable temperature in your home, reducing the need for heating and cooling. You can add insulation to your walls, attic, and floors, seal drafts around windows and doors, and use thermal curtains or blinds.

Utilize Smart Home Technology : Employ smart thermostats and lighting systems that automatically adjust based on your daily schedule or occupancy. This ensures energy is not wasted when it’s not needed.


Now, let's calculate the energy used by the electrical appliance:
The power of the appliance is given as 4000 W and it is used for 12 hours. Energy consumed (in kilowatt-hours) can be calculated using the formula:
Energy = Power × Time
First, convert the power from watts to kilowatts:
4000 W = 4 kW
Now, calculate the energy used:
Energy = 4 kW × 12 hours = 48 kWh
Thus, the energy used by the appliance in 12 hours is 48 kilowatt-hours (kWh).

Answered by BenjaminOwenLewis | 2025-07-06