soft iron

Iron gets magnetized faster but loses its magnetism as soon as the inducing magnet is removed. Hence soft iron is said to have high susceptibility but low retentivity. This property of soft iron is very useful in making temporary electromagnets wher..

Magnetic properties of Steel and Iron - Iron gets magnetized faster but loses its magnetism as soon as the inducing magnet is removed. Hence soft iron is said to have high susceptibility but low retentivity. This property of soft iron is v..

ABCD is the armature coil consisting of a large number of turns of the insulated copper wire wound over a laminated soft iron core I. The coil can be rotated about the central axi..

Place the soft iron piece AB flat on a table and stroke it with a bar magnet from A to B with one end of a bar magnet as shown in figure. When the magnet reaches B it is lifted, and brought back to A to repeat the stroke. After a few strokes you will notice that A will pos..

Magnetic Keepers - If two magnets are placed side by side there will be mutual repulsion or attraction. This weakens the strength of the magnet. To prevent this, bar magnets are placed side by side with opposite poles near. A soft iron piece called a keeper is placed across the ..

An electromagnet can be defined as a soft-iron core that is magnetised temporarily by passing a current through a coil of wire wound on the cor..

As such substances are subjected to cyclic changes the loss of magnetic properties of substance must be small. Therefore the material should attain high values of intensity of magnetisation I and magnetic field for low values of the external field which is the magnetising field. For this reason ..

Place the soft iron piece AB flat on a table and stroke it with a bar magnet from A to B with one end of a bar magnet as shown in figure. When the magnet reaches B it is lifted, and brought back to A to repeat the stroke. After a few strokes you will notice that A will possess ..

Question: For making a strong electromagnet, the material of the core should be 1. soft iron 2. steel 3. brass 4. copper Answer: ..

If you hold a bar magnet near or in contact with a soft iron nail as shown in figure, the nail becomes a magnet by induction. The nail retains its magnetism only as long as the magnet is held near it or in contact with it. It will even pick up several other nails. But is loses i..