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प्रश्न
Bar magnets are often stored in pairs as shown in the figure. E and F being pieces of metal.
Why are E and F placed in contact with the poles of the magnets as shown in the diagram?
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उत्तर
E and F are placed in contact with the poles of magnets to preserve the strength of the magnet.
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संबंधित प्रश्न
Write true or false for a given statement.
A current-carrying coil, when suspended freely, can rest in any direction.
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 |
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Fill in the blank.
Magnetic poles always exist in ...............
Give a reason for the following.
Iron is a magnetic substance.
The alloys called ______ and ______ are used for making industrial magnets.
What is a natural magnet?
What are the factors that determine the strength of the magnet?
