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प्रश्न
Why are the artificial magnets preferred over the natural magnets?
उत्तर
Artificial magnets are preferred over natural magnets because natural magnets are weak and often irregular in shape, they can readily be magnetised and demagnetised by turning the current on or off in the coil.
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संबंधित प्रश्न
Fill in the blank.
In a magnet, ............ have the maximum attractive property.
How is an artificial magnet prepared from a natural magnet?
How can magnetic properties of a magnet be destroyed?
It is said that repulsion is a sure test for magnetism. Why is it so?
You are given two rods. Out of these, one is an iron rod and the other one is magnet, how will you identify these rods?
A student who checked some magnets in the school laboratory found out that their magnetic force is worn out. Give three reasons for that?
Magnets lose their properties if they are dropped from a height.
Proper storage can also cause magnets to lose their properties.
Match the following:
| 1. | Directive property | a. | Never intersect |
| 2. | Magnetic poles | b. | Magnetic compass |
| 3. | Lines of force | c. | Attract |
| 4. | Unlike poles | d. | Exist in pairs |
Match Column I with Column II (One option of A can match with more than one option of B)
| Column 1 | Column II | ||
| (a) | Magnet attracts | (i) | rests along a particular direction |
| (b) | Magnet can be repelled | (ii) | iron |
| (c) | Magnet if suspended freely | (iii) | another magnet |
| (d) | Poles of the magnet can be identified by | (iv) | iron filings |
