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प्रश्न
The alloys called ______ and ______ are used for making industrial magnets.
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उत्तर
The alloys called alnico and nipermag are used for making industrial magnets.
Explanation:
Alnico and Nipermag are special mixtures of metals used to make strong and long-lasting magnets for machines. They can hold their magnetism for a long time and are used in industries. Alnico is made from aluminium, nickel, cobalt, and iron, while Nipermag is made from nickel, iron, and titanium. These materials make the magnets stronger than ordinary iron.
संबंधित प्रश्न
Fill in the blank
To light a table lamp and to run a refrigerator, we use ______ as the source of electricity.
Match the following
| Column A | Column B |
| A) Steel | 1) to store magnets |
| B) Soft iron | 2) temporary magnet |
| C) Use in electric bell | 3) permanent magnet |
| D) Magnetic keepers | 4) electromagnet |
What is the magnetic induction? Explain with the help of a diagram.
Answer the following.
Why is it not possible to isolate a single magnetic pole?
Define the following term regarding a bar magnet:
Magnetic equator
If a magnet is carefully broken into two pieces as shown in figure (i), how does the magnetic strength of each piece compare with that of the original magnet? If another magnet is carefully broken in half along its long axis shown in figure (ii), how would the strength of each piece compare with that of the original magnet?
Draw the magnetic field lines around a bar magnet when a bar magnet is placed such that the N pole points North.
Define the terms magnet and magnetism.
Define natural magnet.
