Standard Article

Measurement of Basic Electromagnetic Quantities

  1. Bryan P. Kibble

Published Online: 15 MAR 2011

DOI: 10.1002/3527600434.eap111.pub2

Encyclopedia of Applied Physics

Encyclopedia of Applied Physics

How to Cite

Kibble, B. P. 2011. Measurement of Basic Electromagnetic Quantities. Encyclopedia of Applied Physics. 243–266.

Author Information

  1. National Physical Laboratory, 10 Warwick Close, Middlesex Hampton TW12 2TY, UK

Publication History

  1. Published Online: 15 MAR 2011

Abstract

The article contains sections titled:

  • 1
    Introduction
  • 2
    Realizing the Base Units
    • 2.1
      The Farad, Realized by a Calculable Capacitor
      • 2.1.1
        The Ohm, Derived from the Farad
      • 2.1.2
        Realizing the Ohm via Measurements of the Fine-Structure Constant
    • 2.2
      The Volt or Watt
      • 2.2.1
        The Watt Balance
      • 2.2.2
        Electrometers
      • 2.2.3
        Defining the Kilogram via Avogadro's Constant
      • 2.2.4
        Self-Consistency of the SI
  • 3
    Working Standards of Voltage and Resistance
    • 3.1
      A Standard for the Volt
    • 3.2
      A Standard for the Ohm
    • 3.3
      Conventional Values Adopted for KJ RK to Represent the SI Volt and Ohm
  • 4
    Other Primary Standards of National Measurement Institutes
    • 4.1
      dc Voltage
    • 4.2
      dc Resistance
      • 4.2.1
        The ac Behavior of Standard Resistors
    • 4.3
      Capacitance
    • 4.4
      Inductance
      • 4.4.1
        The Frequency Dependence of Standard Inductors
    • 4.5
      Electric Fields and Dielectric Constants
    • 4.6
      Magnetic Quantities
      • 4.6.1
        Total Magnetic Flux
      • 4.6.2
        Magnetic Flux Density
    • 4.7
      ac Current and Voltage

Keywords:

  • farad;
  • ohm;
  • volt;
  • watt;
  • kilogram;
  • working standards