Electrical Engineering Formulas

Key electrical engineering formulas for circuits, electronics, and power analysis including resistance, capacitance, and inductance.

Learn the capacitance formula C = Q/V and how capacitors combine in series and parallel. Essential for circuit design and energy storage.

Calculate electrical power using P = VI, P = I²R, and P = V²/R. Essential for circuit design, energy consumption, and component sizing.

Learn the inductance formula V = L(dI/dt) and how inductors combine in series and parallel. Key to understanding electromagnetic circuits.

Kirchhoff's current law: the sum of currents entering a node equals the sum leaving. Essential for circuit analysis and node equations.

Kirchhoff's voltage law: the sum of all voltages around any closed loop equals zero. Fundamental to circuit analysis and mesh equations.

Learn Ohm's law: V = IR. The fundamental relationship between voltage, current, and resistance in electrical circuits.

Calculate the RC time constant using τ = RC. Understand how resistors and capacitors control charging and discharging rates in circuits.

Calculate total resistance for resistors in series (R = R₁+R₂+...) and parallel (1/R = 1/R₁+1/R₂+...). Essential for circuit design.