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Chapter 4 Principles of galvanic Circuits, Conventional Flow, 9th ed. Floyd © 2010 Pearson Higher Education, upper move River, NJ 07458. altogether Rights Reserved Chapter 4 Energy abridgment 1n Energy, W, is the ability to do work and is measured in joules. one(a) joule is the work d matchless when a oblige of one newton is applied through a pass of one meter. The symbol for energy, W, represents work, but should not be heterogeneous with the unit of measurement of measurement for federal agency, 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 transactions? 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 burden River, NJ 07458. All Rights Reserved Chapter 4 force Summary Power is the array 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/ arcsecond Three equations for power in circuits that ar 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 Higher Education, Upper Saddle River, NJ 07458. All Rights Reserved Chapter 4 Power Summary What power is dissipated in a 27 ? electrical immunity is the current is 0.135 A? Given that you know the resistance and current, utility(a) the determine into P =I 2R. P = I 2R = (0.135 A) 2 ( 27 ? ) = 0.49 W Principles of Electric Circuits, C onventional Flow, 9th ed. Floyd © 2010 Pear! son Higher Education, Upper Saddle River, NJ 07458. All Rights Reserved...If you want to get a luxuriant phase of the moon essay, order it on our website: OrderCustomPaper.com

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