How To Make An Electromagnet
List of Materials
- Insulated Copper wire - thin insulation is best, I used crocodile clips* and enamelled wired*, which is also called magnet wire*
- A Battery*
- An Iron Nail.
(Optional Materials)
- Iron filings
- Paper clips*
Coil the Wire
Simply running current through a wire
produces a weak magnetic field. But this is usually too weak to give us
visable results. By coiling the wire closely we amplify the magnetic
influence which gives us visable results. The closer these windings are
the better the electromagnet will be.
To make our electromagnet stronger we can give it an iron core. This will
boost the power of our electromagnet and give us better results. This is
as simple as winding the copper enamelled wire around an iron nail and
securing it with sticky tape. When you connect it to a battery you will a
have a stronger electromagnet. There are some simple things we can do
to make our electromagnets stronger.
To make electromagnets stronger we must do the following:
To make electromagnets stronger we must do the following:
- Add more windings
- Give it an iron core
- Increase the current flowing through the wire
Make Your Own Iron Filing
You can make your own iron filings by filing down a spare iron nail. Don’t
forget to put a piece of paper down to catch the filings as they drop
and help you see them.
One piece of safety advice, don’t leave your battery in a position where it or the leads attached to it could come into contact with the iron filings. As they are very small, if electricity runs through them they will get super hot and burn.
One piece of safety advice, don’t leave your battery in a position where it or the leads attached to it could come into contact with the iron filings. As they are very small, if electricity runs through them they will get super hot and burn.
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