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Understanding DC Circuits by Stephen Fardo, Dale Patrick

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Unit 3

Ohm’s Law and Electric Circuits

To understand electronics, it is necessary to know how to apply basic electric theory. Electronics is a somewhat mathematical subject. The mathematics is easy to understand, because it has practical applications that are easy to see. The basic theory used is called Ohms law. Learn Ohm’s law; it applies to the basic theory of electric circuits. All the examples in this unit are dc circuits. Alternating current (ac) circuits are more complex. AC circuits are described in a companion text, Understanding AC Circuits.

UNIT OBJECTIVES

Upon completion of this unit, you will be able to do the following:

1. Solve series, parallel, and series-parallel (combination) circuits using Ohm’s law.

2. Design voltage-divider circuits. ...

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