(ii) you buy a 75-w lightbulb in europe, where electricity is delivered at 240 v. if you use the bulb in the united states at 120 v (assume its resistance does not change), how bright will it be relative to 75-w 120-v bulbs? [hint: assume roughly that brightness is proportional to power consumed.]
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(ii) you buy a 75-w lightbulb in europe, where electricity is delivered at 240 v. if you use the bul...
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