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

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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.
 

Answers and Replies

  • #2
Delphi51
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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.
 

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