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प्रश्न
A copper wire is held between the poles of a magnet
The current in the wire can be reversed. The pole of the magnet can also be changed over. In how many of the four directions shown can the force act on the wire?
विकल्प
1
2
3
4
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उत्तर
2 (Either North or South)
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संबंधित प्रश्न
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