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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
Answer the following.
Why is it not possible to isolate a single magnetic pole?
State if the following statement is true or false. Correct the statement if it is false.
Whenever a magnet is not in use, it should be stored along with other magnets.
Give a reason for the following.
Iron is a magnetic substance.
Answer the following in short.
If a bar magnet is placed over iron filings, where will the attraction of the iron fillings be
- maximum?
- minimum?
If a magnet attracts a piece of metal, that piece must be made of ______.
Draw the magnetic field lines around a bar magnet when a bar magnet is placed such that the N pole points North.
With the help of a diagram explain the following:
Magnetisation of steel needle using electric current such that the pointed end should have north polarity.
State the laws of magnetism.
The south pole of a bar magnet and the north pole of a U-shaped magnet will _______.
