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प्रश्न
Tick the most appropriate answer.
Temporary magnets are made of
विकल्प
soft iron
steel
stainless steel
copper
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उत्तर
soft iron
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संबंधित प्रश्न
Select the correct answer
Making a magnetic substance a magnet by bringing it closer to another magnet without touching it, is
Select the correct answer
The artificial magnet used to detect direction in the laboratory is
Describe the method by which an iron bar can be made a magnet.
Tick the most appropriate answer.
A permanent magnet can be demagnetized by
Fill in the blank.
Permanent magnets are generally made of steel, cobalt, nickel, or an alloy called ...............
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.
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 |
