Definition of ampere in terms of a flow of electrons past a point in a wire?

[pokeefer]

Homework Statement

a.) What is the operational definition of an ampere?

b.) What is the definition of an ampere in terms of a flow of electrons past a point in a wire?

c.) What is the advantage of the operational definition over the definition in (b)?

Homework Equations

N/A

The Attempt at a Solution

I already defined part a.

I'm stuck on part b and c.

Thanks.

 

[Delphi51]

An Ampere is 1 Coulomb of charge flowing per second. You can easily find the number of electron charges in a Coulomb because the electron charge is given in units of Coulombs.

I seem to recall this being in the news recently. I think they are tossing the definition of an Ampere in terms of the force between two currents and going with the Coulomb per second.