If a 60w incandescent bulb is replaced by a 15w fluorescent bulb, how much less electricity energy (in kilowat*hours) is consumed in a week by the fluorescent bulb, operating for 12 h each day?

3.78 kWh

Explanation:

Power of incandescent bulb = 60 W = 0.06 kW

Power of fluorescent bulb = 15 W = 0.015 kW

Number of hours in a week if each day the light is turned on 12 hours

12×7 = 84 hours

Difference in power

0.06-0.015 = 0.045 kW

Multiplying with the number of hours

Hence, the fluorescent bulb will consume 3.78 kWh less electricity energy than the incandescent bulb.

scorpions are,

c.arachnids

  scorpions are animals in the order scorpiones, under the class arachnida, which makes them a distant cousin of spiders

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