Questions on electromagnetism

In summary, the conversation discusses a formula for converting a magnet's pulling force from lbs to kGs obtained from a website, as well as the possibility of calculating the magnetic field strength between two magnets of opposite polarity based on their distance. The conversation also considers two scenarios for generating a larger EMF and suggests asking the website for further clarification on their stated magnetic field strength.
  • #1
Stevenyzs
17
0
I would like to know if this formula to convert a magnet's pulling force(lbs) to kGs is correct and reliable. I got it off this website http://www.trentatron.com/landing.htm

Pull Force = 0.576 x Br² x (Th) x √‾A where
Br = Flux Rating in KiloGauss
Th = Thickness of Magnetized Surfaces in inches
A = Surface Area (L x W) in inches

Following that, is there a way to calculate the magnetic field strength between 2 magnets of opp. polarity based on the distance between them?
Like for example:
The stated magnetic field strength of both of the magnet's are 3.3 Teslas.
They're 1.6" apart.
So how do I calculate the magnetic field strength between them?

Last of all. which of the 2 scenarios will generate a larger EMF?
1) The sides of the magnet's magnetic field are cut by a coil of Copper wire. [Like how a Faraday(Shaking)Flashlight works.]
2) The magnetic field between 2 opp. polarity magnet's are cut by a coil of Copper wire.
*The magnets, No. of turns of the coil, and the speed of which the magnetic fields are being cut in both scenarios are all the same.*
 
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  • #2
The field drops off with the distance from the magnets, so it's not easy to get exactly. You are probably best asking trentatron, since they know what they mean by their stated magnetic field strength.
 

1. What is electromagnetism?

Electromagnetism is a branch of physics that deals with the study of electric and magnetic fields and their interactions with each other. It also encompasses the study of electromagnetic radiation, which includes light, radio waves, and X-rays.

2. How does electromagnetism work?

Electromagnetism works through the interaction of electric and magnetic fields. When an electric current flows through a wire, it creates a magnetic field around the wire. This magnetic field can then interact with other magnetic fields, such as those created by magnets, to produce motion or other effects.

3. What are some real-life applications of electromagnetism?

Electromagnetism has many practical applications in our daily lives. Some examples include electric motors and generators, which use the interaction between electric and magnetic fields to produce motion and electricity, respectively. Electromagnetic radiation is also used in technologies such as radios, televisions, and cell phones.

4. How is electromagnetism related to light?

Electromagnetic radiation, including visible light, is a form of energy that is created by the interaction of electric and magnetic fields. These fields oscillate at right angles to each other and travel in waves. Therefore, light is a form of electromagnetic radiation that is visible to the human eye.

5. What are some key principles of electromagnetism?

Some key principles of electromagnetism include Coulomb's Law, which states that the force between two charged particles is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. Another principle is Faraday's Law, which describes how a changing magnetic field can induce an electric current in a conductor. Additionally, Maxwell's equations describe the relationship between electric and magnetic fields and how they can change over time.

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