By winding a coil of copper wire round it, and passing an electrical current through the wire.
By stroking the iron with a magnet in one direction. By placing the iron in a magnetic field produced by a current-carrying coil. By hammering or hitting the iron while it is in a magnetic field.
When current is run through a soft iron core, an electromagnet is produced. This type of magnet can be turned on and off by controlling the flow of electricity. Soft iron cores are often used in electromagnets because they can quickly magnetize and demagnetize.
One can deform a bar of iron elastically i.e. after the forces on the bar are removed , the iron bar will move back into its original, non deformed shape. You can already guess that there is a limit to elastically loading such an iron bar. Too large a force will deform the bar plastically or, in simpler words, forever. Back to flexible. I understand your question is about elasticity and iron has it to a limit.
You can attract objects that contain iron by using a magnet, as iron is a magnetic material. When you bring a magnet near objects containing iron, the magnetic force will cause them to be attracted to the magnet.
The essential difference between soft iron and hard iron is in the crystalline structure of the metals. This is sometimes due to the presence of impurities, but the over-riding effect is that of heat treatment. The basic techniques (for iron) are to get it white-hot, then cool it slowly; this produces soft iron. Alternatively, get it dull red, or bright red, or yellow, or white, then plunge it into cold liquid. This process, called quenching, hardens the iron. Picking the correct colour before quenching gives just the hardness needed.
Soft iron will not have any magnetic properties unless it is magnetized, while a piece of copper will not be attracted to a magnet at all. A magnet will attract both soft iron and copper, but the attraction will be stronger for the soft iron due to its ability to become magnetized.
A magnet is made of 'Soft' Iron. A pin has steel (iron) in it. A match does NOT have iron in it.
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.
yes Place the magnet near an iron ball and watch the ball accelerate toward the magnet.
No, the core has to be a soft iron core.
By stroking the iron with a magnet in one direction. By placing the iron in a magnetic field produced by a current-carrying coil. By hammering or hitting the iron while it is in a magnetic field.
the magnet attracts to iron by the magnetic field both the iron and the magnet have
the magnet attracts to iron by the magnetic field both the iron and the magnet have
a loud speaker consist of the following; coil, soft iron core, diaphragm and a magnet. To make a simply experimental loudspeaker, attach a strong magnet on one end of a very short round soft iron core of at least 5-8 inches wide and 0.5 inch tall. now find a little tick paper and wind round the soft iron, making sure there is a little space between the paper and the round magnet attched to soft iron. follow this method for easy pratices. put the round magnet on a table and insert the soft iron core in the center of the magnet. now wind the paper round the soft iron inserted in the magnet. after the paper has been wounded round the iron, gently pull off the paper and make sure that it's present shape is not affected. now wind round the paper a very long tiny coiled wire that may not be up to 1 diametre in tickness depending on your project living the two ends of the coil to be out after winding. remenber, make sure the shape of the paper as it is removed from the soft iron is not affected. put it back round the soft iron, making sure that all the wounded coil entered in the center of the magnet. now connect a small volt rated battey like 1.5v or 3v to the two ends of the coil. listen attentively while connecting the batteries. what did you hear? a kind of cracking sound i guess.
temporary magnets Incorrect, it's electromagnetic.
the tiny magnets or domain at end of magnets are not perfectly align and if we keep it the magnetic strength gets weaker and weaker so by attaching bar of soft iron opposite poles induces on it and this will keep the tiny magnets at the end align.
When current is run through a soft iron core, an electromagnet is produced. This type of magnet can be turned on and off by controlling the flow of electricity. Soft iron cores are often used in electromagnets because they can quickly magnetize and demagnetize.