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प्रश्न
Define the term Effective length of a magnet
एक पंक्ति में उत्तर
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उत्तर
Effective Length of the magnet: The distance between the poles of the magnet is the effective length of a magnet.
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संबंधित प्रश्न
Match the following
| Column A | Column B |
| A) Steel | 1) to store magnets |
| B) Soft iron | 2) temporary magnet |
| C) Use in electric bell | 3) permanent magnet |
| D) Magnetic keepers | 4) electromagnet |
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Write the answer in your word.
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| Nature of bar | Action of compass needle | |
| North Pole | South Pole | |
| Non-magnetic | No action | ________ |
| ________ | attracted | attracted |
| North pole of a bar magnet | ________ | _________ |
| ________ | attracted | repelled |
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Differentiate between:
Primary and secondary cell.
One of the following is an example for a permanent magnet.
The strongest natural magnet is ______.
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