How Does Electron Flow Correspond to Electric Field Direction in Circuits?

In summary, the conversation discusses the definition of positive and negative terminals in current electricity, and how they relate to the movement of charges. There is confusion about how this analogy applies to electrons, but it is clarified that electrons move with the electric field, not against it. The electric field is from the positive to the negative terminal, and electrons move in the opposite direction.
  • #1
tripleA
8
0

Homework Statement


Sorry if this is not a good fit for this sub-forum but i couldn't find anywhere else to post it. In the physics tutorial
http://www.physicsclassroom.com/Class/circuits/topic on current electricty it defines the positive terminal as the high potential terminal and the negative as the low potential. When talking about positive test charges this analogy makes sense, the charge moves from the +ve to the -ve where it loses potential till it has to be "topped" up by the cell.

What confuses me when they begin talking electrons. Using this analogy would mean that the electrons move from the -ve to the +ve but this means work would have to be used to move against the electric field so the potential energy increases till it reaches +ve terminal.

My question is how does this analogy,if it does, change to accommodate electrons? Does the electric field reverse so the -ve terminal is the high potential and the +ve the low potential?

Homework Equations


The Attempt at a Solution

 
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  • #2
Electrons moving from -ve to +ve are not moving against the field. They are negatively charged and so are moving with the field.
 
  • #3
I thought the electric field was from the +ve to the -ve
 
  • #4
It is.
 
  • #5
Im sorry if iv'e misunderstood. Are you saying that work is not used to move electrons from the negative terminal to the positive terminal when the electric field is acting from the positive terminal to the negative terminal?
 
  • #6
Electrons are negatively charged and so move against electric field lines naturally. It's the opposite of the positive test charge.
 

Related to How Does Electron Flow Correspond to Electric Field Direction in Circuits?

1. What is electron flow?

Electron flow is the movement of electrons through a conductive material, such as a wire, in response to an electric field.

2. How does electron flow generate work?

When electrons flow through a material, they transfer energy, known as electrical energy, which can then be converted into other forms of energy, such as heat, light, or mechanical energy, to perform work.

3. What is the direction of electron flow?

Electron flow occurs from the negative terminal of a power source to the positive terminal, opposite to the direction of conventional current flow. This is due to the fact that electrons have a negative charge.

4. How is electron flow related to electricity?

Electron flow is essential for the production and transmission of electricity. When electrons flow through a circuit, they carry energy that can power devices and perform work.

5. What factors affect the rate of electron flow?

The rate of electron flow can be affected by factors such as the material the electrons are flowing through, the temperature, and the voltage applied. Higher voltages and conductive materials can increase the rate of electron flow, while higher temperatures can decrease it.

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