Developed by Georg Simon Ohm, Ohm's Law is a simple law that states the relationship between voltage, current and resistance in a mathematical equation. This mathematical equation is used to determine an unknown factor of voltage, current or resistance in an electrical circuit in which the other two factors are known, and it is one of the most important equations an electrician uses.

This workbook was written by Tom Henry to assist you in studying to prepare for an electrical exam. Its intent is to provide a refresher on theory, Ohm's Law, harmonics, explain AC and DC in layman terms, provide you with easy-to-understand formulas, show sketches of circuits, explain the function of the neutral conductor, and much more. The workbook also includes voltage drop calculations.

Contents of Ohm's Law Electrical Math and Voltage Drop Calculations
Theory, Battery, The Magnetic Field, DC Generator, Ohm's Law, Series Circuit, Parallel Circuit, Calculator Drill, Series-Parallel Circuit, Advantages of Higher Voltages, The AC Sine Wave, AC RMS Value, "In Phase," Power Factor, "Eli the Ice Man," Impedance, Harmonics, The Neutral Conductor, Open Neutral Conductor, Three-Wire Branch Circuit (multi-wire), Two Circuit or Split Circuit, Math Review for the Exam, Unbalanced Neutral Formula, Temperature Conversion, Percentage and Decimal Point, Measurement Conversion, Interpolation, Practical Question Exams, Voltage Drop Calculations, Formulas, Temperature Factor, Exact K Table, AC Resistance, Calculating More than One Load, Calculating Voltage Drop Cost, Voltage Drop Exams, Final Exam, Answers.