Electricity
I need help on a science question:
An electric fan uses 3,240,000 J when running 2.5 hours. If it is plugged into a standard 120 V wall outlet,
how much current does it draw?
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Answers
As we know that Current = charge/time in seconds, engery=0.5capacitancesquare of voltage from this find capacitance capacitance = (2energy)/square of voltage capacitance = (23240000)/square of(120) = 450 F and charge = capacitance * voltage = 450120 = 54000 C so current = 54000/(2.53600) = 6 Amperes. Hence answer for your question is 6 Amperes