Scope
Names, symbols, and definitions for quantities and units of electromagnetism. Based on classical electromagnetism (Maxwell's equations) without reference to quantum field theories.
What You'll Find
One of two IEC-published parts — developed by IEC/TC 25 in close cooperation with ISO/TC 12
Covers electric and magnetic fields, charge, current, voltage, resistance, capacitance, inductance, and electromagnetic waves
Second edition adds the elementary charge as a defined item and introduces induced voltage
Explains conventions for sinusoidal quantities, complex representations (phasors), and RMS values
Describes the unit hierarchy: SI units first, then accepted non-SI, then deprecated CGS units in informative annexes
Conforms to the International Electrotechnical Vocabulary (IEC 60050) for terminology.
Obtain the Standard
Published by the International Electrotechnical Commission (IEC). Edition 2022 (2nd). Developed by IEC/TC 25 — Quantities and units.
Browse Entries
85 quantities defined in Part 6