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प्रश्न
Answer the following in detail.
Write a short note on the theory of magnetism.
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
Write true or false of the following statement.
Copper cannot be magnetised.
What is the magnetic induction? Explain with the help of a diagram.
State if the following statement is true or false. Correct the statement if it is false.
Attraction is the surest test for magnetism.
Give a reason for the following.
Iron is a magnetic substance.
Define the following term regarding a bar magnet:
Magnetic field
Define the following term regarding a bar magnet:
Effective length
Select the correct option:
The place around a magnet where its influence can be detected is called:
Maximum iron filings stick in the middle of a bar magnet when it is brought near them.
What is the connection between electricity and magnetism?
Define natural magnet.
