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An ampere is a unit of measure of the rate of electron flow or current in an electrical conductor. One ampere of current represents one coulomb of electrical charge (6.24 x 1018 charge carriers) moving past a specific point in one second. Physicists consider current to flow from relatively positive points to relatively negative points; this is called conventional current or Franklin current.

The ampere is named after Andre Marie Ampere, French physicist (1775-1836).

This was last updated in April 2005

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This definition is wrong.
The definition maybe is of a Coulomb instead. The Ampere should be measured through the force between two wires.
This is the wrong definition
The definition maybe for Coulomb
Amps = Watts/Volts
Volts = Watts/Amps
Watts = Amps*Volts
Actually, the definition provided is correct, since an ampere is the rate of flow of electrons, or, technically, charge carriers. It is measured by the attractive force created by the magnetic field created around a conductor when a current flows in the conductors.


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