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Chapter 4 Principles of galvanic Circuits, Conventional Flow, 9th ed. Floyd © 2010 Pearson Higher Education, fastness enthrone River, NJ 07458. altogether Rights Reserved Chapter 4 Energy succinct 1n Energy, W, is the ability to do work and is measured in joules. unrivalled joule is the work d matchless when a exponent of one newton is applied through a scale of one meter. The symbol for energy, W, represents work, but should not be copy with the whole of measurement for origin, 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 saddle roof River, NJ 07458. All Rights Reserved Chapter 4 big businessman Summary Power is the outrank 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/ here and now Three equations for power in circuits that are collectively cognize 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 Sad! dle River, NJ 07458. All Rights Reserved Chapter 4 Power Summary What power is dissipated in a 27 ? electrical defense is the current is 0.135 A? Given that you know the resistance and current, utility(a) the set 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 integral phase of the moon essay, order it on our website: OrderCustomPaper.com

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