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Question
A ball of superconducting material is dipped in liquid nitrogen and placed near a bar magnet. (i) In which direction will it move? (ii) What will be the direction of it’s magnetic moment?
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Solution
A superconducting material and nitrogen both are diamagnetic in nature. When diamagnetic material is dipped in liquid nitrogen, it again behaves as a diamagnetic material. Thus, superconducting material will again behave as a diamagnetic material. When this diamagnetic material is placed near a bar magnet, it will be feebly magnetised opposite to the direction of magnetising field.
- So it will move away from the magnet.
- Magnetic moment is from left to right and it is opposite to the direction of magnetic field.
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