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प्रश्न
A bar magnet has no markings to indicate its poles. How would you find out near which end is its north pole located?
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उत्तर
A freely suspended bar magnet always comes to rest in the North−South direction. The north-facing end of the magnet is its north pole, and the south-facing end is its south pole (as shown in the given figure).
Hence, the unknown poles of a bar magnet can be marked by suspending it freely by a string.
संबंधित प्रश्न
Show that a magnet has two poles.
A magnet always has ______ poles.
A cylindrical magnet has only one pole.
Similar poles of a magnet repel each other.
Match the following
| 1. | Compass | Maximum magnetic strength |
| 2. | Attraction | Like poles |
| 3. | Repulsion | Opposite poles |
| 4. | Magnetic poles | Magnetic needle |
The following diagrams show two magnets near one another. Use the words, 'Attract, Repel, Turn around' to describe what happens in each case.
You are provided with iron filings and a bar magnet without labelling the poles of the magnet. Using this...
- How will you identify the poles of the magnet?
- Which part of the bar magnet attracts more iron filings? Why?
Where are poles of a bar magnet located?
Analogy:
Repel to each other: Like poles.
Attract to each other: ______.
When a bar magnet is broken; each of the broken part will have ______ pole/poles.
