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| Q. |
When a bar magnet is cut into two equal halves, the pole strength of each piece |
| A. | becomes double |
| B. | becomes half |
| C. | becomes zero |
| D. | remains the same |
| Answer» D. remains the same | |
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Explanation: The poles remains same whether the magnet is cut into two equal half or more and also pole strength remains same but magnetic moment reduces due to decrease in the length of the magnet. If a bar magnet is suspended by a thread, it will come to rest in a position close to the north-south direction. The end of the magnetic toward the north is called north pole (N-poled of the magnet and the other end the south pole (S-pole). |
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