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प्रश्न
Give scientific reason:
Soft iron is used to make electromagnets.
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उत्तर
Soft iron is used to make electromagnets because it has high susceptibility and low retentivity, it gets magnetized very faster and loses magnetism as soon as the inducing magnet is removed.
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संबंधित प्रश्न
Write true or false of the following statement.
Copper cannot be magnetised.
Select the correct answer
An example of natural magnet is
Answer the following in short.
What is a magnet? Differentiate between natural and artificial magnets.
The alloys called ______ and ______ are used for making industrial magnets.
Fill the blank spaces in the table given below:
| Nature of bar | Action of compass needle | |
| North Pole | South Pole | |
| Non-magnetic | No action | ________ |
| ________ | attracted | attracted |
| North pole of a bar magnet | ________ | _________ |
| ________ | attracted | repelled |
Describe two simple experiments to support the statement that magnetism is a property of the molecules of a magnet.
Give scientific reason:
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A magnet attracts ______.
Consider the statement given below and choose the correct option.
Assertion: Iron filings are concentrated more at the magnetic poles.
Reason: The magnets are so sharp.
