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प्रश्न
Answer the following in detail.
Write a short note on the theory of magnetism.
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उत्तर
All substances are made of minute particles. In a magnetic substance whether magnetized or non-magnetized), each individual particle behaves like an independent magnet. In the unmagnetized state, these particles within the substance are present in a random fashion such that they cancel out the magnetic effects of each other.
In a magnetized state, these particles align in a particle direction and the substance behaves like a magnet.
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संबंधित प्रश्न
How will you test whether a given rod is a magnet or not ?
Fill in the blank.
Magnetic poles always exist in ...............
Answer the following in detail.
How is the single-touch method of magnetism different from the double-touch method?
Fill in the blank.
The perpendicular bisector of the line joining the two poles of a magnet is called ...................
Select the correct option:
The substance which form a strong temporary magnet is:
Bar magnets are often stored in pairs as shown in the figure. E and F being pieces of metal.
Mark on the diagram the poles of the second magnet,
Since every iron atom is a tiny magnet, why are not all iron bar magnets?
Distinguish between
Natural and artificial magnets.
Maximum iron filings stick in the middle of a bar magnet when it is brought near them.
