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प्रश्न
You are given an iron strip. How will you make it into a magnet?
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उत्तर
The ‘Touch and stroke’ method can be used to make an iron strip into a magnet. For this, a bar magnet is required. The bar magnet is moved along the length of the iron strip starting from one end to the other end (as shown in the given figure).
Then, the bar magnet is lifted from the other end and brought to the starting point again with the same pole of the bar magnet. On repeating the process at least 30 to 40 times, the iron strip will become a bar magnet with two poles.
संबंधित प्रश्न
Write true or false of the following statement.
Permanent magnets get easily demagnetised.
Fill in the blank.
Temporary magnets are usually made up of .................
Select the correct answer
The artificial magnet used to detect direction in the laboratory is
What are natural and artificial-magnets?
State three differences between the temporary and permanent magnets.
Name the material of the core of an electromagnet for temporary magnet.
State if the following statement is true or false. Correct the statement if it is false.
Temporary magnets are made of cobalt.
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.
