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Power, Work and Energy in Electrical Circuits

Power, Work and Energy in Electrical Circuits. Potential Difference. 1 J. 1 V =. 1 C. (1J)1C. =1W. (1A)1V =. (1C)1 s. Power Units. 1 J. 1 C. 1 V =. 1 A =. 1 C. 1 s. Power. P=VI. Work. W=P t W=V I t. Work-Energy Theorem. W= D TE. Heating.

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Power, Work and Energy in Electrical Circuits

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  1. Power, Work and Energy in Electrical Circuits

  2. Potential Difference 1 J 1 V = 1 C

  3. (1J)1C =1W (1A)1V = (1C)1 s Power Units 1 J 1 C 1 V = 1 A = 1 C 1 s

  4. Power P=VI Work W=P t W=V I t

  5. Work-Energy Theorem W=DTE

  6. Heating In the real world, much of the electrical energy of a circuit is turned into thermal energy.

  7. Kilowatt-Hours Most electric bills are calculated using the kilowatt-hour as the unit. A kilowatt-hour is an amount of energy.

  8. Cost - 20¢ kWhr What is the cost of running a 60 W incandescent bulb for 1000 hours? What is the cost of running a 13 W CF bulb for 1000 hours?

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