Charge seperation in a conducting wire

In summary, the electric field in a conducting wire with a charge separation between two points will have a magnitude equal to V/l, where V is the voltage and l is the length of the wire between the two points of charge separation. This formula is explained in more detail on page 4, topic 3.2 of the provided resource.
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jsmith613
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If I have a conducting wire of length l and a charge separation develops between one end of the wire and the other, will the electric field have a magnitude is equal to: V/l
(voltage/length of wire)??
 
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  • #2
jsmith613 said:
If I have a conducting wire of length l and a charge separation develops between one end of the wire and the other, will the electric field have a magnitude is equal to: V/l
(voltage/length of wire)??

If your "l" is the length of the wire between two points of charge separation , and "V" is the voltage between the two points of charge separation in the wire , then your formula is correct.

More info here ( page 4 , topic 3.2) :

http://www2.warwick.ac.uk/fac/sci/physics/current/teach/module_home/px263/lectures/sefton.pdf
 

Related to Charge seperation in a conducting wire

1. What is charge separation in a conducting wire?

Charge separation in a conducting wire refers to the redistribution of electric charges within the wire, resulting in a buildup of positive charges on one end and negative charges on the other end. This occurs when an external electric field is applied to the wire, causing the free electrons within the wire to move towards the positive end and the positively charged ions to move towards the negative end.

2. Why does charge separation occur in a conducting wire?

Charge separation occurs in a conducting wire due to the movement of free electrons in response to an external electric field. The electrons, which are negatively charged, are attracted to the positive end of the wire and will accumulate there, resulting in a buildup of negative charges. At the same time, the positively charged ions in the wire are repelled by the external electric field and will accumulate at the negative end of the wire, creating a buildup of positive charges.

3. What factors affect the amount of charge separation in a conducting wire?

The amount of charge separation in a conducting wire is affected by several factors, including the strength of the external electric field, the length and thickness of the wire, and the type of material the wire is made of. A stronger electric field will result in a greater charge separation, while a longer and thicker wire will allow for more charges to accumulate. Additionally, some materials have a higher conductivity, which allows for easier movement of charges and therefore greater charge separation.

4. How does charge separation impact the flow of electricity in a conducting wire?

Charge separation plays a crucial role in the flow of electricity in a conducting wire. It allows for the movement of charges, which is necessary for an electric current to flow. As the free electrons move towards the positive end of the wire, they create a flow of electricity that can be used to power various devices. Without charge separation, there would be no movement of charges and no flow of electricity in a conducting wire.

5. Can charge separation in a conducting wire be controlled?

Yes, charge separation in a conducting wire can be controlled to some extent. The amount of charge separation can be manipulated by adjusting the strength of the external electric field or changing the properties of the wire, such as its length or material. However, charge separation is a natural phenomenon that occurs when an electric field is applied, and it cannot be completely eliminated. It can only be controlled and harnessed for practical use in electrical devices.

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