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The generally accepted definition of electrical current
is "the flow of electrons." But some people criticize this
definition on the basis that: (1) it cannot explain how
current (a signal) flows at the speed of light, (2) it
cannot explain how current "flows" across the plates
of a capacitor, and (3) it cannot explain how current
can be induced in a conductor some distance away.
This article shows that these criticisms are not valid.
Electron flow, properly understood, can occur at the
speed of light, and some of the component laws on
which Maxwell's Equations are based are fully capable
of explaining the other phenomena.
is "the flow of electrons." But some people criticize this
definition on the basis that: (1) it cannot explain how
current (a signal) flows at the speed of light, (2) it
cannot explain how current "flows" across the plates
of a capacitor, and (3) it cannot explain how current
can be induced in a conductor some distance away.
This article shows that these criticisms are not valid.
Electron flow, properly understood, can occur at the
speed of light, and some of the component laws on
which Maxwell's Equations are based are fully capable
of explaining the other phenomena.
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