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What are permanent magnets 2 Give one ex...

What are permanent magnets 2 Give one example.

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Substances which at room temperature retain their ferromagnetic property for a long period of time are called "permanent magnets". Commonly used bar magnet is permanent magnet.
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U-LIKE SERIES-MAGNETISM AND MATTER-VERY SHORT ANSWER QUESTIONS
  1. Where on the surface of earth is the angle of dip zero?

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  2. The horizontal component of the earth's magnetic field at a place is B...

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  3. At a place, the horizontal component of earth's magnetic field is B an...

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  4. The vertical component of earth's magnetic field at a place is sqrt3 t...

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  5. What does the Gauss theorem in magnetism establish ?

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  6. The permeability of a magnetic material is 0.9983. Name the type of ma...

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  7. Which of the following substances are diamagnetic ? Bi , Al , Na , ...

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  8. Which of the following substances are paramagnetic ? Bi, Al, Cu, Ca...

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  9. What are permanent magnets 2 Give one example.

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  10. How does the magnetisation vector of a paramagnetic sample vary with t...

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  11. The susceptibility of a magnetic material is 1.9 xx 10^(-5). Name the ...

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  12. The susceptibility of a magnetic material is - 4.2 xx 10^(-6). Name th...

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  13. A ball of superconducting material is dipped in liquid nitrogen and pl...

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  14. Do individual atoms of a paramagnetic material have permanent dipole m...

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  15. Relative permeability of a material mur = 0.5. Identify the nature of ...

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  16. Relative permeability of a material mur = 400. Identify the nature of ...

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  17. What do you mean by hysteresis ?

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  18. The susceptibility of a magnetic material is - 0.085. Identify the mag...

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  19. Steel is preferred for making permanent magnets whereas soft iron is p...

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  20. Why should the material used for making permanent magnets have high co...

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