Electromagnet Equasion Help PLEASE

[hintzy]

Electromagnet Equation Help PLEASE!

I have found many equations on modeling electromagnetic forces but being a high-school student, they don't make any sense to me. what i need is this: i need someone to tell me how i can find out Xgauge wire + Ywraps around Zdiameter(feet) steel core + Dlength(feet) of wrapped section + Fcurrent(amps and volts in AC/DC i can't remember which is what you use) = strength of magnet in lbs it can hold up with maglev

i know I am asking a lot but any help would be much appreciated

 

[Ouabache]

A couple of thoughts...

If I am interpreting your description correctly, it sounds like you are making an electromagnet and you want to predict how strong a magnetic field it will have.

You can make a DC or an AC electromagnet.. Some good info about both kinds may be found at ---> http://my.execpc.com/~rhoadley/magdcem.htm

In your book, you may want to read up on some material and equations that use parameters such as: H (magnetic field), B (magnetic flux density), I (current), L length of your winding, R radius of winding, A - crosssection area of wire (determined from gauge), N number of turns.

You mentioned a "steel core" .. The type of core you use, would definitely affect the strength of your resulting magnetic field. I would read up on parameters for your core, such as permeabity, reluctance, etc.. You might find a table of these parameters in your book. Also check the current CRC Handbook of Chemistry and Physics. It has lots of tables and may have some for parameters of magnetic cores.

A little primer on magnetics may be found at:
http://www.harpamps.com/micKqanda/Magnetics-for-Morons.html

 

[ravenprp]

Hello,

I completely understand your frustration with trying to understand complex equations as a high school student. Electromagnetism can be a difficult topic to grasp, but with some guidance, you can definitely understand the basics.

Firstly, it's important to understand the basic components of an electromagnet. An electromagnet is essentially a coil of wire with an electric current running through it. This current creates a magnetic field, which is what makes the electromagnet able to attract and repel objects.

Now, let's break down the equation you mentioned.

X gauge wire: This refers to the thickness of the wire used in the coil. The thicker the wire, the stronger the magnetic field will be.

Y wraps: This refers to the number of times the wire is wrapped around the steel core. The more wraps, the stronger the magnetic field will be.

Z diameter: This is the diameter of the steel core in feet. The larger the diameter, the stronger the magnetic field will be.

D length: This is the length of the wrapped section of the coil in feet. The longer the coil, the stronger the magnetic field will be.

F current: This refers to the current running through the coil, measured in amps. The higher the current, the stronger the magnetic field will be.

Now, to calculate the strength of the magnet in pounds, you will need to use the following formula:

Magnetic force (in pounds) = (μ0 * N^2 * I^2 * A) / (2 * g^2 * r^2)

Where:
μ0 = permeability of free space (constant value of 4π x 10^-7 in SI units)
N = number of turns in the coil (Y wraps)
I = current in amps (F current)
A = cross-sectional area of the coil (π * r^2, where r is the radius of the coil)
g = air gap between the magnet and the object it is attracting
r = radius of the steel core (Z diameter / 2)

I know this may seem overwhelming, but with some practice and understanding of the basic components, you will be able to use this formula to calculate the strength of your electromagnet.

I hope this helps and good luck with your project!