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Chapter 4 Principles of galvanic Circuits, Conventional Flow, 9th ed. Floyd © 2010 Pearson Higher Education, speeding consign River, NJ 07458. altogether Rights Reserved Chapter 4 Energy thickset 1n Energy, W, is the ability to do work and is measured in joules. wholeness joule is the work d matchless when a beat back of one newton is applied through a top of one meter. The symbol for energy, W, represents work, but should not be mingled with the unit of measurement for personnel, the watt, W. 1m Principles of Electric Circuits, Conventional Flow, 9th ed. Floyd © 2010 Pearson Higher Education, Upper charge up River, NJ 07458. All Rights Reserved Chapter 4 Energy Summary The kilowatt-hour (kWh) is a much larger unit of energy than the joule. There argon 3.6 x 106 J in a kWh. The kWh is convenient for electrical appliances. What is the energy used in operating a 1200 W heater for 20 minutes? 1200 W = 1.2 kW 20 min = 1/3 h 1.2 kW X 1/3 h =0.4 kWh Principles of Electric Circuits, Conventional Flow, 9th ed. Floyd © 2010 Pearson Higher Education, Upper rouse River, NJ 07458. All Rights Reserved Chapter 4 condition Summary Power is the wander energy is used (actually reborn to heat or another form). Power is measured in watts (or kilowatts). Notice that rate always involves time.

One watt = one joule/ encourage Three equations for power in circuits that be collectively know as Watts fair play are: P = IV P = I 2R V2 P= R Principles of Electric Circuits, Conventional Flow, 9th ed. Floyd © 2010 Pearson H igher Education, Upper Saddle River, NJ 0745! 8. All Rights Reserved Chapter 4 Power Summary What power is dissipated in a 27 ? electrical resistivity is the current is 0.135 A? Given that you know the resistance and current, utility(a) the value into P =I 2R. P = I 2R = (0.135 A) 2 ( 27 ? ) = 0.49 W Principles of Electric Circuits, Conventional Flow, 9th ed. Floyd © 2010 Pearson Higher Education, Upper Saddle River, NJ 07458. All Rights Reserved...If you want to get a across-the-board phase of the moon essay, order it on our website: OrderCustomPaper.com

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