... Alternating Current Formulas 560Appendix D Greek Alphabet 573Appendix E Answers to Practice Problems 574 Glossary 584 Index 595ivContents2 Electrical Studies for TradesEARLY ELECTRICAL HISTORYAlthough ... automotive repair, electrical apprenticing, carpentry, building maintenance, construction work, and appliance repair. Electrical Studies for Trades, 4th Edi-tion, is written for technicians who ... includes information on oscilloscopes because there are many circuits that require the use of an oscilloscope in troubleshooting. Electrical Studies for Trades, 4th Edition provides information...