Materials that have very high permeabilities (hundreds and even thousands times of that of free space)

A. Paramagnetic

B. Non- magnetic

C. Ferromagnetic

D. Diamagnetic

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  1. The ratio of the permeability of material to the permiabiity of air or vacuum.
  2. The air space between poles of magnets
  3. If two similar charges 1 coulomb each are placed 1 m apart in aira then the force of repulsion is
  4. Back emf refers to the
  5. If the number of valence electrons of an atom is exactly 4a then the substance is called
  6. Refers to the non- metallic materials that have the ferromagnetic properties of iron.
  7. The emf produced in a wire by its motion across a magnetic field does not depend upon the
  8. Refers to the magnetic lines
  9. Why is it that the magnitude of magnetomotive force required for air gap is much greater than that required…
  10. The unit of flux density is
  11. If a magnetic flux cuts across 200 turns at a rate of 2Wb/sa the induced voltage according to Faraday's…
  12. Theory of ferromagnetic phenomena which assumes each atom is a permanent magnet which can turn freely…
  13. Magnetic field intensity is a ________ quantity.
  14. The magnetic potential in a magnetic circuit can be measured in terms of
  15. The contribution to the ionization in an ionization chamber by electrons liberated from t he walls.
  16. A good conductor has how many valence electrons?
  17. When the relative permeability of a material is much greater than 1a it is called _______ material.
  18. A magnetic pole produces 5000 field lines. How much is the flux in webers? A. 50 × 10^-6
  19. Permanent magnets can be found in
  20. The science of adapting electronics to aerospace flight.
  21. Which of the following is a paramagnetic material?
  22. The energy stored in an electrostatic field or electromagnetic field is called
  23. Another term for corona discharge.
  24. Cobalt is an example of a ______ material.
  25. The magnetic field around the conductor is determined by the
  26. The direction of force o a current carrying conductor placed in a m found by
  27. At/m is a unit of
  28. The induced emf in a wire loop that is moved parallel to a uniform magnetic field is
  29. The force between two magnetic poles varies with the distance between them. The variation is ______…
  30. Which of the following is a paramagnetic material?