Question

Wastage of electricity can be reduced by using:
A. CFL
B. Motors
C. Heaters
D. Bulbs

Answer 1

Hint:To solve this question. We should know how to calculate the energy required by an electronic appliance and how effective it is. So, when we take a bulb then we consider the energy required for it and how much light it is producing. Mostly it is used to save energy as well as expenditure on electricity bills. For other devices we consider the efficiency of that device as well as the energy consumed by it.

Complete answer:
We read about each option:
CFl:CFLs utilise a third to a fifth of the energy used by incandescent lights and can last up to 15 times as long. In comparison to a 60-watt incandescent bulb, an average CFL light that produces 800 lumens requires only 13 to 15 watts. So, it saves energy wastage.

Motor: Because one horsepower is equal to 745.7 watts of electrical power, a 5HP motor running at 100% efficiency would use around 3.728kW of power. It will consume 3728.5 kilowatt-hours in an hour. It is a huge amount. It doesn't save energy.

Heaters: It does not have to be an extravagant cost, though, if properly managed. You can figure out how much electricity a space heater uses by looking up the wattage of your mode. Although the quantity of electricity used varies depending on the space heater and how much it is used, space heaters typically use 1.5 kilowatts of power. So, it is also a huge amount of electricity.

Bulbs: The most energy-efficient bulbs are incandescent and halogen lamps, which have the maximum power. "A 60-watt incandescent bulb consumes 60 watts of electricity; we bill in kilowatt hours, which is 1,000 watts constantly for one hour." For each hour that a 60-watt bulb is on, it consumes 60 watt hours, or. 06 kilowatt hours of energy.

Therefore, the correct option is A.

Note:Compact fluorescent lamps (CFLs) and light emitting diodes (LEDs) are the two primary types of energy-efficient light bulbs available (LEDs). LEDs are the most widely used and versatile light source, and they can be used to replace dimmable lights and spotlights. LEDs are also more efficient than CFLs in terms of energy consumption. Switching to LED light bulbs can save an average home $1,000$ over the course of ten years. That works out to about $8.33$ per month.