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

In summary, the operational definition of an ampere is 1 Coulomb of charge flowing per second. This definition is advantageous because it allows for an easier calculation of the number of electron charges in a Coulomb. Additionally, there is a movement to replace the traditional definition of an ampere with the Coulomb per second definition.
  • #1
pokeefer
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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.
 
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  • #2
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.
 

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

1. What is the definition of ampere?

The ampere is the unit of electric current in the International System of Units (SI). It is defined as the amount of electric charge passing through a given point in a conductor per unit time.

2. How is ampere related to the flow of electrons?

Ampere is directly related to the flow of electrons. It is defined as the number of electrons passing through a given point in a wire per second. The greater the flow of electrons, the higher the ampere value.

3. What is meant by "past a point" in the definition of ampere?

The phrase "past a point" refers to the specific location in a wire where the flow of electrons is being measured. This can be any point along the wire, as long as the same point is being used consistently for measurement.

4. How is the ampere defined in terms of a flow of electrons?

The ampere is defined as one coulomb of electric charge passing through a given point in a conductor in one second. This means that if one coulomb of charge passes through a point in a wire in one second, the current is equal to one ampere.

5. Why is the flow of electrons used to define the ampere?

The flow of electrons is used to define the ampere because it is a fundamental property of electric current. By measuring the flow of electrons, we can accurately determine the amount of current flowing through a wire and use it as a standard unit of measurement.

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