Magnetism MCQ Questions and Answers Quiz

11. Electromagnets are used in

  1. loud speakers
  2. door bells
  3. both a and b
  4. cabinet doors

12. Magnetic susceptibility para-magnetic materials is

  1. +10 raised to -5
  2. -10 raised to -5
  3. 10 raised to 5
  4. 10 raised to -5 to 10 raised to -2

13. Magnetic susceptibility dia--magnetic materials is

  1. +10 raised to -5
  2. -10 raised to -5
  3. 10 raised to 5
  4. 10 raised to -5 to 10 raised to -2

14. Magnetic susceptibility ferro-magnetic materials is

  1. +10 raised to -5
  2. -10 raised to -5
  3. 10 raised to 5
  4. 10 raised to -5 to 10 raised to -2

15. Typical size of magnetic domains ................(mm).

  1. 10-1
  2. 0.1-1
  3. 0.05
  4. 0.001

16. Typical thickness of Bloch walls ................(nm).

  1. 0.1-1
  2. 10-1
  3. 10-50
  4. 100

17. Example for soft magnet

  1. 45 Permalloy
  2. CrO2
  3. Fe-Pd
  4. Alnico

18. Example for hard magnet

  1. 45 Permalloy
  2. CrO2
  3. Fe-Pd
  4. Alnico

19. Example for magnetic material used in data storage devices

  1. 45 Permalloy
  2. CrO2
  3. Cunife
  4. Alnico
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MCQ Multiple Choice Questions and Answers on Magnetism

Magnetism Question and Answer