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If you put a 240V 40W bulb with A19 base into a 120V fixture will the lumination be 40W or 20W because the current is one-half?


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2015-07-15 19:45:54
2015-07-15 19:45:54

Treating this as an ideal resistance, voltage will be half, so current will be half. Power (which is V * I) is one fourth, so you will only draw 10W.


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Ours don't! You should call either the manufacturer or the installer to find out what is wrong.

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1.5 + 0.5 + 1 = 3 You seem to be unaware of the fact that you could have obtained the answer much more easily and quickly by using the calculator that comes as part of your computer.

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