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प्रश्न
Answer the following in detail.
Distinguish between a temporary magnet and a permanent magnet.
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उत्तर
Temporary magnet
- These magnets retain their magnetic property for a short duration of time.
- These are made of soft iron.
- They lose their magnetic properties once the magnetizing force is removed.
Permanent magnet
- These magnets retain their magnetic property always.
- These are made of iron, steel, cobalt, nickel, or an alloy callçd ANILCO.
- They retain their magnetic properties even after the magnetizing force is removed.
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संबंधित प्रश्न
Write true or false of the following statement.
Artificial magnets are weaker than the natural magnets.
Select the correct answer
Making a magnetic substance a magnet by bringing it closer to another magnet without touching it, is
What are natural and artificial-magnets?
Describe the method by which an iron bar can be made a magnet.
Name the material of the core of an electromagnet for temporary magnet.
Fill in the blank.
Permanent magnets are generally made of steel, cobalt, nickel, or an alloy called ...............
Give a reason for the following.
Electromagnets are temporary magnets.
Write true or false of the following statement.
Single touch method is better than the electrical method for making a magnet.
It was observed that a pencil sharpener gets attracted by both the poles of a magnet although its body is made of plastic. Name a material that might have been used to make some part of it.
Column I shows different positions in which one pole of a magnet is placed near that of the other. Column II indicates the resulting action between them for each situation. Fill in the blanks.
| Column I | Column II |
| N - N | ______ |
| N - ______ | Attraction |
| S - N | ______ |
| ______ - S | Repulsion |
