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प्रश्न
Since every iron atom is a tiny magnet, why are not all iron bar magnets?
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उत्तर
Each molecule of a magnetic substance is an independent magnet. But in an unmagnetised iron piece, molecular/ atoms (tiny magnets) are not arranged in any order and hence they neturalise the magnetic forces of each other As a result, any unmagnetised iron piece can not behave as a magnet.
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संबंधित प्रश्न
Describe a simple experiment to illustrate that like poles of two magnets repel each other while the unlike poles attract ?
Give a reason for the following.
Iron is a magnetic substance.
How will you do this?
Explain that a magnet has a certain magnetic field.
A magnet remains steady in a ________ direction.
Define the following term:
Geographic meridian
Define the following term:
Angle of dip
Give scientific reason:
Soft iron is used to make electromagnets.
Maximum iron filings stick in the middle of a bar magnet when it is brought near them.
Match the following:
| 1. | Electricity and magnetism | a. | Step-down transformer |
| 2. | Force on the conductor | b. | Hans Christian Oersted |
| 3. | Electric bell | c. | I LB |
| 4. | Ns <Np | d. | Electromagnet |
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.
