Which of the following has the highest permeability?

A. Soft iron

B. Steel

C. Air

D. Permalloy

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  1. The force which set ups or tends to set up magnetic flux in a magnetic circuit
  2. Hydrogen is an example of a _____ material.
  3. A principle that states that only two electrons with different spins are allowed to exist in a given…
  4. One of the common application of an air- cored choke.
  5. Which of the following is used by permanent magnets as the magnetic material?
  6. Who developed the electromagnetic theory of light in 1862?
  7. Defined as the ratio of the volume occupied by the atoms or ions in a unit cell divided by the volume…
  8. The magnitude of the induced emf in a coil is directly proportional to the rate of change of flux linkages.…
  9. The permeability of permalloy is
  10. Referred to as the specific reluctance of a material
  11. Electric field intensity at a point due to a given charge ______ if the relative permittivity of the…
  12. The unit of flux is _____ in cgs system.
  13. If the solenoid is gripped by the right hand with the fingers pointing the direction of current flowa…
  14. The magnetic field of a magnetized iron bar when strongly heated
  15. An alloy of 40 percent iron and 60 percent nickel.
  16. What is the relative permittivity of air?
  17. One that has magnetic poles produced by internal atomic structure with no external current necessary
  18. A law establishing the fact that the algebraic su of the rises and drops of the mmf around a closed…
  19. The quantity of magnetism retained by a magnetic material after withdrawal of the magnetizing force…
  20. __________ is a substance of whose molecules consist of the same kind of atom.
  21. The force between two magnetic poles is _____ their poles strength.
  22. The quantity 10^6 maxwells is equivalent to one
  23. A negatively charge body has
  24. If the number of valence electrons of an atom is less than 4a the substance is called
  25. One weber of flux is equal to _______ magnetic lines of force.
  26. Materials that have very high permeabilities (hundreds and even thousands times of that of free space)
  27. How many electrons are needed in the valence orbit to give a material's stability?
  28. The B-H curve for ________ is a straight line passing through the origin.
  29. Germanium atom has ______ protons and ______ electrons.
  30. The amount of magnetizing force to counter balance the resid magnetic material is referred to as