A regular light bulb uses much more.
Most night lights are rated at 5-7 watts. While a normal incandescent bulb usually ranges from 40-120 watts.
2007-05-15 02:26:46
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answer #1
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answered by Brian K² 6
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Power is Energy per unit time. It is measured in Watts. (1 Watt = 1 Joule/sec) In order to get the total energy used, you need to know both the Power and the time it was in use. Energy = Power * time. Our electric bills are metered in KiloWatt Hours. (Power * Time).
Therefore to answer the question, which uses more electricity (essentially which costs more), we would need to compare both the power level of each light and the duration it was active. A 7 watt night light on for 10 hours ( 70 Watt Hours) would use more electricity than a 60 watt bulb that is on for 1 hour. (60 Watt Hours)
Perhaps the real question is which uses more electricity, a night light left on all night or a regular light bulb turned on only when you need it? In most cases, the regular light bulb would be more energy efficient. Even though it output more light and ran at a higher Power level, it would be on for a brief period of time.
2007-05-15 10:58:09
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answer #2
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answered by DimBulb 1
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A regular light bulb uses more energy because it uses more watts.
2007-05-15 09:33:14
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answer #3
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answered by hemlers_girl 2
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When comparing the energy usage of two lights, you only need to consider the watts used each. The one with the greater wattage will of course use the most electricity. This should be reasonably obvious.
2007-05-15 09:30:24
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answer #4
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answered by ZeroCarbonImpact 3
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The night light, because its accually plugged into the wall, unlike the light bulb,which can conduct electricity, with the tiny wires inside it.
2007-05-16 23:25:26
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answer #5
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answered by Anonymous
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most nite lites are 7 watts
2007-05-15 09:29:18
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answer #6
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answered by Anonymous
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Look at the wattage and find u answer.
2007-05-15 10:05:42
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answer #7
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answered by JOHNNIE B 7
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