Feb7 - PHYS142 Lecture 14 Direct Current Circuits Chapter...

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Direct Current Circuits • Chapter 28 All sections except 5 28.1 Electromotive Force 28.2 Resistors in Series and Parallel 28.3 Kirchhoff’s Rules 28.4 RC Circuits PHYS142 Lecture 14 1
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Aim is to analyze electric circuits Circuit elements include: Batteries Capacitors Resistors Inductors Diodes Transistors ……. 2
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Electromotive force (28.1) A device that transforms one type of energy to electrical energy is called a source of electromotive force or EMF . EMF is measured in Volts. Let’s consider a real EMF (battery). 3
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The aging of a battery, due to the consumption or corrosion of its electrodes and the breakdown of its electrolyte, results in a reduction in its output or terminal voltage . These losses can be represented by an internal resistance . A real battery can be represented by The voltage between A and B is the terminal voltage of the battery, V AB , and r is the internal resistance of the battery. is the EMF of the battery.
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Feb7 - PHYS142 Lecture 14 Direct Current Circuits Chapter...

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