# Electromagnets

## Electromagnets

• Submitted By: kazenteshi
• Date Submitted: 09/17/2009 5:56 PM
• Category: Science
• Words: 1256
• Page: 6
• Views: 437

The amount that I am intending to examine in my experiment is the
strength of the electromagnet

The factors that affect the force of an electromagnet are: The
heat, electricity, length of the soft iron inside, diameter, the width of the
wire used for the copper, how firmly the coils of copper are wrapped around,
the material and also the amount of turns on the electromagnet.

I am only going to vary Electricity in the experiment, all the other factors
I will keep regular

I have chosen to vary Electricity because, the more turns there are, the more
powerful the magnet becomes and therefore the more domains there are. The
thicker the diameter is, the more domains there are in the middle and
therefore the stronger the electromagnet becomes.
The higher the temperature is, the easier it is for the domains to be able
to turn and lineup. If you use a thinner wire it will cause more resistance
in the experiment. All of these factors will change the strength of the
electromagnet.

I decided to do Electricity, as the others were more difficult to do

I believe that when I do the experiment, proportionally as the electricity
increases, the strength will increase.

Force (N)

Electricity (A)

I made this calculation because as you raise the electricity, you will
induce more domains to line up- and if its proportional, you would then
double your electricity which would therefore double the domains (force). If you
were to cut a magnet in half, it doesn’t¡¦t destroy it, in actual fact two
magnets are created.

If you wanted, you could continue cutting the magnets in half each time
therefore making the magnets smaller and smaller. In theory, if we used an
extremely sharp, but still small blade, we would be able to on cutting
magnets in half until we reached a limit-this would be called a domain and
is about 1/1000th mm long and would consist of about 10 thousand million
atoms.
An unmagnetised iron would...