How is the Magnetic Field Shaped in a Hollow Cylinder Electromagnet?

In summary, the conversation discusses the concept of a solenoid, which is a hollow cylinder with wire coils wrapped around the outside that creates a magnetic field. The speaker suggests that one can easily find the B-flux lines for this configuration in textbooks and mentions that there may be a difference between the fields of a solenoid and a hollow one.
  • #1
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Ok, everyone knows what an electromagnet is--the most obvious example being wire coils around a nail through which a charge is passed. If you had a hollow cylinder, and the coils were wrapped around the outside; how would the magnetic field be shaped?

Illustration (Please assume that there are more coils than shown and that the right side of the cylinder is not slanted.):

|--> |
|---> |
|----> |
 
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  • #2
You have what is known as a solenoid. You can easily find B-flux lines for this configuration in most physics or electromagnetics textbooks.
 
  • #3
Thanks, I have one right in front of me. Is there any difference in the fields of a solenoid and a hollow one?
 

What is an electromagnetic field?

An electromagnetic field is a physical field created by electrically charged particles. It is composed of two types of fields - electric and magnetic - which are perpendicular to each other and travel in waves at the speed of light.

What are the sources of electromagnetic fields?

Electromagnetic fields can be produced by a variety of sources, including electrically charged particles, such as electrons or protons, moving at different speeds. They can also be created by changes in electric and magnetic fields, such as when an electrical current flows through a wire.

What are the potential health effects of electromagnetic fields?

There is ongoing research into the potential health effects of electromagnetic fields. Some studies have suggested a possible link between long-term exposure to high levels of electromagnetic fields and an increased risk of certain types of cancer. However, the evidence is inconclusive and more research is needed to fully understand the potential risks.

How do electromagnetic fields affect electronic devices?

Electromagnetic fields can interfere with electronic devices by inducing current or voltage in their circuits. This can cause disruptions or malfunctions in the device's operation. However, most modern electronic devices are designed to minimize the effects of electromagnetic interference.

Can electromagnetic fields be shielded or blocked?

Yes, electromagnetic fields can be shielded or blocked by certain materials, such as metal, which can absorb or reflect the waves. However, the effectiveness of shielding depends on the strength of the field and the type of material used. It is important to note that complete shielding is not always possible.

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