Shielding Wire: Reduce Field at Point 30mm Away

In summary, shielding wire is a conductive material used to reduce the effects of electromagnetic fields. It works by absorbing and redirecting the fields, and is commonly made of copper, aluminum, or alloys. It is most effective for low frequency fields and the appropriate distance for placement varies depending on the strength and frequency of the fields.
  • #1
maxwel
1
0
Hi,
how can we reduce field at a point(of observation) 30mm from a 10 m long blank copper wire with return path somewhere at infinity carrying DC current by using a 1m long copper tube 1mm wall thickness and 30mm outer diameter?
 
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  • #2
Which field?

If you are talking about the E field, then the question is not well formulated since the return conductor is at infinity.
w
If you are talking about B-field, then you can't. Copper will absolutely no effect on a static B field.
 

FAQ: Shielding Wire: Reduce Field at Point 30mm Away

1. What is shielding wire and how does it reduce field at a point 30mm away?

Shielding wire is a type of conductive material that is used to create a barrier around an object or area to reduce the effects of electromagnetic fields. When placed 30mm away from a point, the shielding wire absorbs and redirects the electromagnetic fields, reducing their strength at that point.

2. How does shielding wire work?

Shielding wire works through the principle of electromagnetic induction. When an electromagnetic field encounters the conductive material of the shielding wire, it induces a current in the wire which creates an opposing electromagnetic field. This opposing field cancels out or reduces the strength of the original field at the point where the shielding wire is placed.

3. What materials are commonly used for shielding wire?

Common materials used for shielding wire include copper, aluminum, and various alloys. These materials are highly conductive and can effectively block or redirect electromagnetic fields.

4. Is shielding wire effective for all types of electromagnetic fields?

Shielding wire is most effective for low frequency electromagnetic fields, such as those produced by power lines or household appliances. It may not be as effective for high frequency fields, such as those produced by cell phones or microwaves.

5. How can I determine the appropriate distance to place shielding wire for maximum effectiveness?

The appropriate distance for placing shielding wire will depend on the strength and frequency of the electromagnetic fields you are trying to shield. It is best to consult with a professional or conduct experiments to determine the most effective distance for your specific situation.

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