By Charles K. Alexander
Alexander and Sadiku's 3rd variation of "Fundamentals of electrical Circuits" keeps within the spirit of its winning prior versions, with the target of proposing circuit research in a fashion that's clearer, extra attention-grabbing, and more straightforward to appreciate than the contest. scholars are brought to the sound, six-step challenge fixing method in bankruptcy one, and are constantly made to use and perform those steps in perform difficulties and homework difficulties through the textual content and on-line utilizing the KCIDE software program. A stability of concept, labored examples and prolonged examples, perform difficulties, and real-world functions, mixed with over three hundred new homework difficulties for the 3rd version and powerful media choices, renders the 3rd variation the main finished and student-friendly method of linear circuit research. Key characteristic of this booklet is: it is all approximately Alexanders challenge fixing procedure - supported with unrivaled volume and caliber of difficulties - which units this article except the normal circuits texts.
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Extra info for Fundamentals of Electric Circuits, 2nd Edition
30 t For Prob. 30. 31 A battery may be rated in ampere-hours (Ah). An lead-acid battery is rated at 160 Ah. (a) What is the maximum current it can supply for 40 h? (b) How many days will it last if it is discharged at 1 mA? 32 How much work is done by a 12-V automobile battery in moving 5 × 1020 electrons from the positive terminal to the negative terminal? 33 How much energy does a 10-hp motor deliver in 30 minutes? Assume that 1 horsepower = 746 W. 34 A 2-kW electric iron is connected to a 120-V line.
Solution: | ▲ ▲ Since there are four elements in the circuit, the circuit has four branches: 10 V, 5 , 6 , and 2 A. The circuit has three nodes as identified in | e-Text Main Menu | Textbook Table of Contents | Problem Solving Workbook Contents CHAPTER 2 Basic Laws 35 Fig. 13. The 5- resistor is in series with the 10-V voltage source because the same current would flow in both. The 6- resistor is in parallel with the 2-A current source because both are connected to the same nodes 2 and 3. 4. 13 The three nodes in the circuit of Fig.
15 i For the bridge network in Fig. 54, find Rab and i. 5 A. 54 For Practice Prob. 15. 8 APPLICATIONS | ▲ ▲ Resistors are often used to model devices that convert electrical energy into heat or other forms of energy. Such devices include conducting wire, lightbulbs, electric heaters, stoves, ovens, and loudspeakers. In this | e-Text Main Menu | Textbook Table of Contents | Problem Solving Workbook Contents CHAPTER 2 Basic Laws 55 section, we will consider two real-life problems that apply the concepts developed in this chapter: electrical lighting systems and design of dc meters.