Compact fluorescent bulbs aremuch more efficient at producing light than are ordinary incandescentbulbs. They initially cost much more, but they last far longer and usemuch less electricity. According to one study of these bulbs, a compactbulb that produces as much light as a 100 W incandescent bulb usesonly 23 W of power. The compact bulb lasts 10,000 hours, on the average,and costs $11.00, whereas the incandescent bulb costs only $0.75,but lasts just 750 hours. The study assumed that electricity costs $0.080per kilowatt-hour and that the bulbs are on for 4.0 h per day. How much do you save over 3.0 years if you use a compact fluorescent bulb instead of an incandescent bulb?
Compact fluorescent bulbs are
much more efficient at producing light than are ordinary incandescent
bulbs. They initially cost much more, but they last far longer and use
much less electricity. According to one study of these bulbs, a compact
bulb that produces as much light as a 100 W incandescent bulb uses
only 23 W of power. The compact bulb lasts 10,000 hours, on the average,
and costs $11.00, whereas the incandescent bulb costs only $0.75,
but lasts just 750 hours. The study assumed that electricity costs $0.080
per kilowatt-hour and that the bulbs are on for 4.0 h per day. How much do you save over 3.0 years if you use a compact
fluorescent bulb instead of an incandescent bulb?
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