INTRODUCTION

Much of electronics is concerned with arithmetic.

The technician must

be able to figure out resistances, voltages, current, etc.

Fortunately,

formulas have been developed to help you find these values.

Formulas depend

on your knowing certain values, from which you find an unknown value.

In

electricity, these values are often reported as metric numbers (such as 3 ,

5M) for the sake of convenience.

No attempt is made in this text to establish a relationship between

the formulas and numbers and the concepts of basic electricity.

You will

learn the meanings and

applications of all of these formulas in other

subcourses.

By that time, you are expected to already be able to use the

formulas to solve problems.

The frames in this section are arranged differently than those in

Section 1.

However, by following the directions given, you will be able to

easily proceed through the text.

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