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प्रश्न
With the help of a diagram explain the following:
Magnetisation of an iron bar by a single touch method.
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उत्तर
The magnetization of Iron Bar by Single Touch Method: Place the iron piece on the table and stroke it with a bar magnet from A to B with one end of the magnet. When the magnet reaches B it is lifted and brought back to A to repeat the stroke. After a few strokes, we will notice that A has acquired the same polarity as the pole rubbed against it.
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संबंधित प्रश्न
Answer the following in detail.
List four methods of magnetizing a magnetic substance.
Answer the following in detail.
How can a magnet be demagnetized?
Define the following term regarding a bar magnet:
Effective length
Bar magnets are often stored in pairs as shown in the figure. E and F being pieces of metal.
What is the material of darkened part?
If a magnet is carefully broken into two pieces as shown in figure (i), how does the magnetic strength of each piece compare with that of the original magnet? If another magnet is carefully broken in half along its long axis shown in figure (ii), how would the strength of each piece compare with that of the original magnet?
Define the following term:
Angle of declination
Give scientific reason:
Soft iron is used to make electromagnets.
How can you identify non-magnetic materials? Give an example of a nonmagnetic material.
The pole of a freely suspended magnet that points towards the north is called the south pole and what points towards the south is the celled north pole.
