Advertisements
Advertisements
प्रश्न
You are provided with an iron needle. How will you magnetize it?
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
______ will also get affected by magnetic field.
Analogy:
Electromagnet: Magnetic crane.
Ordinary magnet: ______.
What are the objects affected by a magnetic field?
What is meant by a mag-stripe?
Write a note on the Mangle train.
Write a note on:
Magstripe:
Three magnets A, B and C were dipped one by one in a heap of iron filing. Figure shows the amount of the iron filings sticking to them.
The strength of these magnets will be
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?
