Power in DC Circuits.

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Presentation transcript:

Power in DC Circuits

Electrical Energy and Power Stuff Ya Gotta Know-Power in Electical Circuits Electrical Energy and Power The rate at which the energy is lost is the power From Ohm’s Law, alternate forms of power are

Electrical Energy and Power The SI unit of power is the Watt (W) Current must be in Amperes, resistance in ohms, and DV in Volts The unit of energy used by electric companies is the kilowatt-hour This is defined in terms of the unit of power and the amount of time it is supplied 1 kWh = 3.60 x 106 J