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how can i do a magnet that i can turn it on or off EG ( excavator magnet ) ? Answered

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Wisaam
Wisaam

8 years ago

Its called an electromagnet. You can make one by winding insulated wire around an iron nail and then passing electricity through it. As you turn on the electricity, the iron nail turns into a magnet and when you turn it of, it loses its magnetic properties. There are some things you have to take care of though:
1) The wire that you wind should be insulated(it should be covered or coated with something that doesn't conduct electricity).
2) The object that you wind it around should be made of iron, nickel or any other magnetic metal(metal which gets attracted by a simple permanent magnet).
3) You have to wind a lot of wire on it in order to make it work and be noticeably powerful enough.

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mpilchfamily
mpilchfamily

8 years ago

They are called electromagnets. Simply wind a piece of wire around a metal object and apply voltage.

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steveastrouk
steveastrouk

Answer 8 years ago

...ferromagnetic metal....

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steveastrouk
steveastrouk

8 years ago

Wind a lot of wire on a soft iron, like old transformers Voila, electromagnet.