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I = 500 watts ÷ 115 volts = 4.35 amps of current. C. Assume that you know amps and watts, you can calculate how many volts are in the circuit. by rearranging the formula to E = P ÷ I. Assume that there is a 1200 watt coffee. pot pulling 10 amps. What is the source of voltage? E = 1200 watts ÷ 10 amps =120. volts… ................
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