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प्रश्न
Which magnet will you use?
A window shutter opens and shuts continuously in the wind.
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उत्तर
Permanent magnet can be used to stop the continuous shuttering of the window in the wind.
संबंधित प्रश्न
Fill in the blank
Like poles ______ each other and unlike poles _____
Match the following
| Column A | Column B |
| (a). Human body | (1). electric bell |
| (b). Silk thread | (2). current |
| (c). Charge in motion | (3). conductor |
| (d). soft iron | (4). electromagnet |
| (e) . Electromagnet | (5). insulator |
Draw diagrams of the artificial magnets of four different shapes?
Tick the most appropriate answer.
The surest test of magnetism is
Give a reason for the following.
Iron is a magnetic substance.
Define the following term regarding a bar magnet:
Magnetic axis
If a bar magnet is cut into equal pieces by cutting it at right angles to its axis at two places, ______ bar magnets are formed, and a total of _____ poles are formed.
Select the correct option:
The place around a magnet where its influence can be detected is called:
A magnet attracts ______.
The magnetic poles always exist in pairs.
