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∙ 11y ago
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How are electro magnet different from permanent magnet?
Electro magnets differs from permanent magnet because it requires electricity. A simple electro magnet consists of an iron rod wrapped in a coil of copper and when electricity flows through the copper, a magnetic field is formed.
Fe separated from Al physically?
Iron can be separated with an (electro)magnet.
When a piece of iron behaves like a magnet when it is touching a permanent magnet that is called?
The process by which a iron piece touching a permanent magnet behaves as a magnet as long as it maintains contact is called magnetic induction. not only does this work when the iron is physically touching the magnet but it works as long as the piece of iron remains under the influence of the magnet. A iron piece attracted to a magnet through a paper with out any physical contact will also behave as a magnet.
Can electro magnet magnetize and demagnetize soft iron?
Yes, they can magnetise soft iron. Not sure about demagnetising though. I assume that if more than one or two were placed around the soft magnet, it could demagnetise it.. However, the soft iron would need to be 'hit' so that the poles in the iron can allign with the magnetic fields due to the electro magnet.
How can you tell if a piece of iron is magnetized or neutral?
If the piece of metal is a magnet it will attract another piece of iron. You should be able to feel this attraction as the two become very close. It's magnetic field can be "seen"( that is the effect) by placing iron filings on a piece of glass and place the magnet beneath the glass. Otherwise it is not a magnet.
What happens to the iron ruler if it rubs with a magnet?
It will become an electro-magnet which is an temporary magnet. it is because of the induction property, the magnetic effect gets transfered to the Scale. (it can be any piece of Iron)
What c is the piece of iron inside a magnet?
core
How can you tunna piece of iron in to a temporary magnet?
Wrap the iron with many turns of insulated copper wire. Then send a current through the wire. The iron core will become an electro-magnet while the electricity is running.
Fe separated from Al physically?
Iron can be separated with an (electro)magnet.
Why is an armature made of iron?
so the electro magnet can attract it as it will be magnetic
How are electro magnet different from permanent magnet?
Electro magnets differs from permanent magnet because it requires electricity. A simple electro magnet consists of an iron rod wrapped in a coil of copper and when electricity flows through the copper, a magnetic field is formed.
Earth is what kind of magnet?
Its an electro-magnet - currents flowing through the iron core.
When a piece of iron behaves like a magnet when it is touching a permanent magnet that is called?
The process by which a iron piece touching a permanent magnet behaves as a magnet as long as it maintains contact is called magnetic induction. not only does this work when the iron is physically touching the magnet but it works as long as the piece of iron remains under the influence of the magnet. A iron piece attracted to a magnet through a paper with out any physical contact will also behave as a magnet.
A magnet attracts a piece of iron and the iron can then attract another piece of iron .What is the basis of this attraction?
When an iron piece is quite away from the magnet ,i.e, not present in magnetic field of the magnet then the iron piece is in neutral state ,i.e, there is no north & south pole . But , as soon as the iron piece interacts with magnetic field of magnet ,i.e, near to the magnet then the north pole of magnet make the nearer part or end of the iron piece south pole & simultaneously other part of iron becomes north pole . Similarly if south pole of the magnet interacts with iron piece then that end/part becomes north pole & other end becomes north pole . Now this iron piece has north & south pole .So iron piece is now converted into magnet which can attract other iron pieces in similar way as explained before .
Which mixture would correctly separate sand and iron?
Iron can be separated from sand using a (electro)magnet.
What is there inside a magnet?
iron
Can electro magnet magnetize and demagnetize soft iron?
Yes, they can magnetise soft iron. Not sure about demagnetising though. I assume that if more than one or two were placed around the soft magnet, it could demagnetise it.. However, the soft iron would need to be 'hit' so that the poles in the iron can allign with the magnetic fields due to the electro magnet.
