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IEVref:113-02-10ID:
Language:enStatus: Standard
Term: electric charge
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Symbol: Q
q
Definition: additive scalar quantity attributed to any particle and, generally, any system of them, to characterize its electromagnetic interactions

NOTE 1 Electric charge is always an integral multiple of the elementary electric charge, except for quarks. The result may be positive, negative, or zero.

NOTE 2 Due to additivity, electric charge for any system of particles is well defined as the sum of their charges.

NOTE 3 Electric charge is subject to a conservation law. It is an invariant under Lorentz transformation, and thus not dependent on the choice of a reference frame.

NOTE 4 The electric current through a surface is the time derivative of the electric charge transferred through that surface.

NOTE 5 The coherent SI unit of electric charge is coulomb, C. The unit ampere hour is used for electrolytic devices, such as storage batteries: 1 A∙h = 3,6 kC.

NOTE 6 To denote the charge of a point object, q is often used.


Publication date:2011-04
Source:121-11-01 MOD
Replaces:
Internal notes:2014-07-07: <i>Q, q</i> corrected to <i>Q</i><br><i>q</i>. JGO

2017-06-02: Cleanup - Remove Attached Image 113-02-10en.gif
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