Question

Explain what do you understand by magnetic induction. What role does it play in attraction of apiece of iron by a magnet

Answer 1

The temporary magnetism acquired by a magnetic material, when kept near or in contact with a magnet, is called induced magnetism.The process in which a magnetic material acquires the magnetic properties, temporarily, is called magnetic induction.When a piece of iron id brought  near one end of a magnet ,the nearer end of the piece acquires an opposite polarity by magnetic induction.Since unlike poles attract each other, therefore iron piece is attracted towards the end of the magnet. Thus,a piece of iron first becomes a magnet by induction and then is attracted towards the magnet.In other words, induction precedes attraction

Answer 2

When a piece of iron is placed in proximity of a magnet, the piece of iron turns into a magnet. It obtains the property to attract iron fillings when brought closer to it. Therefore, the piece of iron acts like a magnet for as long as it is placed in contact with the magnet.