# Practical Problems in Mathematics for Electricians

Cengage Learning, 2004 - Mathematics - 225 pages
Now in its seventh edition, Practical Problems in Mathematics for Electricians contains 45 instructional units featuring updated materials, examples, and expanded mathematical operations for students and trainees of the electrical trade. Coverage begins with simple addition and subtraction of whole numbers and progresses through basic algebra and trigonometry, developing readers' awareness of electrical symbols, basic circuits, component terminology, and calculator use for success on the job. Word problems designed to encourage the use of logical deduction are just one of the hallmarks of this tried and true guidebook that provides the mathematical background students need to succeed in the electrical field. Explanations at the beginning of each unit foster a better understanding of the concepts being presented; while problems related to electricity help develop an appreciation for electrical terms and practices.

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### Contents

 Multiplication of Whole Numbers I 10 COMMON FRACTIONS 23 Division of Common Fractions I 38 Multiplication of Decimal Fractions I 54 PERCENT AVERAGES AND ESTIMATES 67 InterestI 71 DiscountI 74 Averages and Estimates I 77
 Proportion I 129 Combined Operations with Ratio and Proportion I 132 FORMULAS 135 135 Rearrangement in Formulas I 139 General Simple Formulas I 143 Ohms Law Formulas I 153 Power Formulas I 160 Combined Problems on Formulas I 163

 Combined Problems on Percents Averages and Estimates I 80 POWERS AND ROOTS 83 Roots I 86 Combined Operations with Powers and Roots I 91 Metric Measure and Scientific Notation I 93 MEASURE 99 Area Measure I 107 Volume and Mass Measure I 113 Energy and Temperature Measure I 121 Combined Problems on Measure 1125 125 RATIO AND PROPORTION 127 127
 TRIGONOMETRY 167 167 Trigonometric Functions I171 171 Plane Vectors I 180 Rotating Vectors 1187 187 Combined Problems in TrigonometryI 191 Number Systems I 194 APPENDIX205 205 GLOSSARY 7213 213 ANSWERS TO ODDNUMBERED PROBLEMS 217 Copyright