Magnetic field solenoid with diamagnetic core

This explains why the permitivity outside the diamagnetic material is the same as the permitivity of free space. Additionally, it may seem strange that one does not feel the magnetic field from the diamagnetic material when very close to it, but this is due to the weak nature of the bound currents compared to the free currents. In summary, the bound currents inside the diamagnetic material only significantly contribute to the magnetic field inside the material, while the dominant contribution to the total B-field comes from the free currents in the solenoid.
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For a solenoid as on the picture with a diamagnetic in the middle, the total B-field generated will come from both the free currents inside the solenoid as well as the induced magnetic field from the diagmagnetic material. But will the magnetic field attributed to the bound currents inside the diagmagnetic only contribute to the magnetic field in regions inside the diamagnetic?
All the formulas in my book seem to suggest so since the permitivity outside the diagmagnetic is just the permitivity of free space. On the other hand it seems weird that you don't feel the magnetic field from the diagmagnetic material even when you are very close to it!
 

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A:The magnetic field due to the bound currents in the diamagnetic material will not contribute significantly to the total magnetic field outside of the material. This is because the bound currents in the diamagnetic material are much weaker than the free currents in the solenoid. The magnetic field of the solenoid will still be the dominant contribution to the total B-field outside of the material. However, the bound currents in the diamagnetic material will still contribute to the total B-field inside the material.
 

FAQ: Magnetic field solenoid with diamagnetic core

What is a magnetic field solenoid with diamagnetic core?

A magnetic field solenoid with diamagnetic core is a type of electromagnet that uses a cylindrical coil of wire (solenoid) wrapped around a core made of a diamagnetic material. The diamagnetic material, such as bismuth or copper, has a weak magnetic field that is easily influenced by an external magnetic field.

How does a magnetic field solenoid with diamagnetic core work?

The solenoid coil is connected to a power source, which creates a magnetic field when an electric current flows through the wire. This magnetic field induces a weak magnetic field in the diamagnetic core, resulting in an overall stronger magnetic field. This process is known as magnetic induction and allows the solenoid to attract or repel magnetic materials.

What are the applications of a magnetic field solenoid with diamagnetic core?

Magnetic field solenoids with diamagnetic cores have various applications in science and technology. They are commonly used in particle accelerators, magnetic resonance imaging (MRI) machines, and magnetic levitation trains. They can also be used for magnetic separation, magnetic braking, and as electromagnets in electronic devices.

What is the difference between a magnetic field solenoid with diamagnetic core and other types of electromagnets?

The main difference is the type of core material used. Diamagnetic cores have a weak magnetic field that is easily influenced by external magnetic fields, while ferromagnetic cores have a strong, permanent magnetic field. This makes diamagnetic solenoids more versatile and suitable for applications where a variable magnetic field is needed.

What are the advantages of using a magnetic field solenoid with diamagnetic core?

One of the main advantages is that the magnetic field strength can be easily controlled by adjusting the current flowing through the solenoid coil. This allows for more precise and flexible manipulation of magnetic materials. Additionally, diamagnetic cores do not retain any magnetism when the current is turned off, making them safer and more energy-efficient compared to other types of electromagnets.

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