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What is the difference between an electr...

What is the difference between an electromagnet and a permanent magnet? How is an electromagnet designed? Stable any two factors on which the strength of an electromagnet depends.

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MODERN PUBLICATION-CLASSIFICATION OF MAGNETIC MATERIALS-EXERCISE
  1. What are ferromagnetic substances? Explain briefly domain theory to ex...

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  2. Draw magnetic field lines, when a diamagnetic substance is placed in a...

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  3. Give six properties of diamagnetic substance.

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  4. Name any two paramagnetic substances.

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  5. Explain the magnetism on the basis of atomic theory.

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  6. What are dia and paramagnetic substances?

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  7. Distinguish between diamgnetic and ferromagnetic materials in respect ...

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  8. State and explain Curie's law in magnetism.

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  9. Explain magnetic hysteresis.

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  10. Explain magnetic hysteresis.

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  11. Explain the phenomenon of self induction?

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  12. Explain briefly the importance of retentivity and coercivity for perma...

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  13. What are permanent magnets? Give one example.

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  14. What is the difference between an electromagnet and a permanent magnet...

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  15. Find an expression for the magnetic dipole moment of an atom.

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  16. Distinguish between diamgnetic and ferromagnetic materials in respect ...

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  17. What are ferromagnetic substances? Explain briefly domain theory to ex...

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  18. What are dia, para and ferromagnetic substances? Give one example of e...

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  19. Define coercivity and remanene. How are soft iron and hard steel disti...

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  20. Define coercivity and remanene. How are soft iron and hard steel disti...

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