Magnetic field inside coaxial conductor

In summary, a coaxial conductor is a type of cable commonly used for transmitting radio frequency signals. The magnetic field inside a coaxial conductor is generated by the flow of electrical current through the central wire and varies along its length. This magnetic field can affect the surrounding environment and can be controlled by adjusting the current flow. Proper shielding and grounding are important to minimize any negative effects.
  • #1
Shukie
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Homework Statement



The problem asks us to find the magnetic field inside a coaxial conductor that consists of an aluminum wire of radius r1 surrounded by a cylindrical aluminum shell of inner radius r2 and outer radius r3. I know how to do this, but it also says that there is oil flowing between r1 and r2 to carry away heat. Does this change anything about the direction and/or magnitude of the magnetic field?
 
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  • #2
the oil will have a different value of magnetic permeability, which you must take into account.
 

FAQ: Magnetic field inside coaxial conductor

1. What is a coaxial conductor?

A coaxial conductor is a type of cable that consists of two concentric conductors, typically a central wire surrounded by a cylindrical outer conductor. It is commonly used for transmitting radio frequency signals and is often used in telecommunications and cable TV systems.

2. How is the magnetic field generated inside a coaxial conductor?

The magnetic field inside a coaxial conductor is generated by the flow of electrical current through the central wire. This current creates a circular magnetic field around the central wire, which is then confined within the outer conductor due to its cylindrical shape.

3. Does the magnetic field inside a coaxial conductor vary along its length?

Yes, the magnetic field inside a coaxial conductor varies along its length because the strength of the magnetic field is directly proportional to the distance from the central wire. This means that the magnetic field will be strongest at the center of the conductor and gradually decrease towards the outer edges.

4. How does the magnetic field inside a coaxial conductor affect the surrounding environment?

The magnetic field inside a coaxial conductor can affect the surrounding environment by inducing electromagnetic interference (EMI) in nearby electronic devices. It can also cause unwanted heating in conductive materials near the conductor. Therefore, proper shielding and grounding are important to minimize these effects.

5. Can the strength of the magnetic field inside a coaxial conductor be controlled?

Yes, the strength of the magnetic field inside a coaxial conductor can be controlled by adjusting the amount of current flowing through the central wire. Increasing the current will result in a stronger magnetic field, while decreasing the current will result in a weaker field.

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