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Class 12 Physics Practice Test: Permanent Magnets and Electromagnets
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Class 12 Physics Practice Test: Permanent Magnets and Electromagnets
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10 Questions

1. Pick out the temperature at which iron becomes paramagnetic?
2. Arrange the following in the increasing order of magnetic susceptibility.
3. Identify the expression for Curie’s constant from the following.
4. Find the true statement.
5. Which among the following has a relative permeability much larger than 1?
6. Which one of the following is feebly repelled by a magnet?
7. Soft iron is used in the cores of transformers.
8. Pick out the material that cannot be used to make permanent magnets.
9. Which one of the following, when suspended freely, slowly sets itself parallel to the direction of the magnetic field?
10. Aluminum is a diamagnetic material.

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