Electrical Engineering Formulas

Master the equations that power electrical engineering—without searching through multiple textbooks.

Electrical Engineering Formulas is a comprehensive, practical reference designed to put the most important equations in electrical engineering at your fingertips.

Whether you are an engineering student, practicing electrical engineer, technician, researcher, or technical professional, this book provides a clear and organized collection of essential formulas for solving problems, checking calculations, reviewing concepts, and supporting real-world engineering work.

Rather than focusing on lengthy derivations, this reference emphasizes what engineers often need most: the correct equation, the meaning of every variable, the applicable units, and the conditions required to use the formula properly.

Inside, you will find formulas and relationships covering:

• Electrical units, Ohm’s law, energy, power, and efficiency

• DC circuit analysis, including Kirchhoff’s laws, mesh and nodal analysis, Thévenin and Norton equivalents, superposition, and maximum power transfer

• Capacitors, inductors, and transient circuits

• AC circuits, phasors, impedance, resonance, and admittance

• Real, reactive, apparent, and complex power

• Power factor and power-factor correction

• Balanced three-phase electrical systems

• Magnetic circuits and electromagnetic principles

• Transformers, including equivalent circuits, testing, regulation, and efficiency

• DC motors and generators

• Induction and synchronous machines

• Transmission lines, per-unit calculations, fault analysis, and power-flow relationships

• Diodes, BJTs, MOSFETs, and semiconductor fundamentals

• Operational amplifiers and analog circuits

• Rectifiers, converters, inverters, PWM, and power electronics

• Fourier and Laplace transforms, filters, feedback, and control-system fundamentals

• Electrical measurements, instrumentation, sensors, ADCs, and DACs

• Electric heating, illumination, batteries, and electrochemistry

• Digital electronics, Boolean algebra, timing, logic levels, and fan-out

• Physical constants, conductor data, mathematical identities, symbols, and engineering reference material

Each section is structured for fast lookup and practical application, making it easier to move from a problem to the equation you need without wasting time searching through pages of theory.

The book also highlights important distinctions that frequently cause calculation errors, including RMS versus peak quantities, line versus phase values, real versus reactive power, sign conventions, operating assumptions, and formula validity conditions.

Engineering students preparing for coursework and examinations
Practicing electrical engineers performing calculations and design checks
Technicians and technologists working with electrical systems
Researchers and academics who need a convenient equation reference
Anyone who wants a dependable collection of electrical engineering formulas in one place

From basic circuit relationships to machines, power systems, electronics, signals, and control, Electrical Engineering Formulas brings together the equations that electrical engineers use again and again.

Keep the formulas you need within reach. Calculate faster. Verify your work. Solve with confidence.