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How do you determine the amount of electrical energy used by a device?
Wiki User
∙ 9y ago
Measure the current flowing through the device and the voltage across it; multiply the current by the voltage to get the power in Watts.
Watts = Volts x Amps ; Watts = Amps2 x Resistance (steady state answers using friendly units)
Wiki User
∙ 9y ago
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