B. Electrical Calculations

1. Formulas and Conversions ^{2, 3, 4}

Perform mathematical calculations utilizing basic algebra, geometry, and trigonometry

Self-Paced Math Courses

• Algebra Lessons
• Geometry Lessons
• Trigonometry Lessons
• Power Triangle Calculator

Important Lessons

• Finding an Angle from Any Two Sides
• Solving Right Triangles
• The Pythagorean Theorem
• Trigonometry for AC Circuits
• Distance Between Two Points
• Understanding and displaying the J operator
• Operations with Complex Numbers

Apply fundamental electrical laws to simple circuits (e.g., Ohm's law, Kirchhoff's law, etc.)

Essential Reading

• American Electricians' Handbook, Sixteenth Edition ⁴

Basic Laws & Theory

• The Fundamental Laws of Electricity
• Ohm's Law & Watt's Law
• Simple Series Circuits
• Simple Parallel Circuits
• Does Kirchhoff’s Voltage Law really fail?

Apply conversions between units (e.g., microhms to milliohms, horsepower to kilowatts, etc.)

SI Units ²

• Converting within the metric system
• International System of Units
• Horsepower to kilowatts conversion
• Metric Unit Converter
• How do you calculate microhms from millivolt drop test?

Electrical Units and Calculations

• NETA Formulae Sheet ^{2, 3, 4}
• AC Circuit Equations
• Common electrical units explained

Last Update: Jun 19, 2026