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प्रश्न
You are provided with an iron needle. How will you magnetize it?
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उत्तर
- Place the iron needle on the table.
- Take a bar magnet and place one of its poles near one edge of the iron needle.
- Rub from one end to another without changing the direction of the pole of the magnet.
- Repeat the process 30 to 40 times. The needle will be magnetized.
- If it will not attract pin or iron fillings continue the same process for some more time.
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संबंधित प्रश्न
______ will also get affected by magnetic field.
Analogy:
Electromagnet: Magnetic crane.
Ordinary magnet: ______.
Give the uses of magnets.
What are the uses of magnets?
What type of magnet is used in the Mangle train?
Write a note on the Mangle train.
The arrangement to store two magnets is shown by figures (a), (b), (c) and (d) in the following figure. Which one of them is the correct arrangement?
Four identical iron bars were dipped in a heap of iron filings one by one. Figure shows the amount of iron filings sticking to each of them.
- Which of the iron bar is likely to be the strongest magnet?
- Which of the iron bars is not a magnet? Justify your answer.
Four identical iron bars were dipped in a heap of iron filings one by one. Fig. 13.5 shows the amount of iron filings sticking to each of them.
Which of the iron bars is not a magnet? Justify your answer.
Suggest an arrangement to store a U shaped magnet. How is this different from storing a pair of bar magnets?
