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Permeability means

A. The conductivity of the material for magnetic lines of force

B. The magnetization test in the material after exciting field has been removed

C. The strength of an electromagnet

D. The strength of the permanent magnet

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  1. Electric lines of force leave or enter the charge surface at an angle of
  2. The reluctance of a magnetic circuit varies with
  3. Who discovered superconductivity in 1911?
  4. Materials that have very high permeabilities (hundreds and even thousands times of that of free space)
  5. The property of a material which opposes the creation of magnetic flux in it
  6. Defined as the flux density produced in it due to its own induced magnetism
  7. The customary energy unit in atomic and nuclear physics is
  8. The magnetic field around the conductor is determined by the
  9. The magnetic field inside a solenoid
  10. The core of a transformer heats up when its primary is fed from an ac source because of
  11. The air space between poles of magnets
  12. If the number of valence electrons of an atom is exactly 4a then the substance is called
  13. The magnetic field of a magnetized iron bar when strongly heated
  14. The force acting on a unit n- pole placed at that point is called
  15. What is the value of the absolute permittivity of air?
  16. Core materials of a good relay have _________ hysteresis loop.
  17. One farad equals
  18. A magnetizing force of 1000 AT/m will produce a flux density of __________ i
  19. Under ordinary conditionsa a body is considered
  20. ______ is an electromagnet with its core in the form of a close magnetic ring.
  21. Defined as a closed path in which magnetic induction or flux flows
  22. What is the practical unit of electrical energy?
  23. The quantity 10^6 maxwells is equivalent to one
  24. Referred to as the specific reluctance of a material
  25. Amorphous solid is also called
  26. The reluctance of a magnetic circuit is not dependent on which of the following?
  27. The ratio between the intensity of magnetization produced in a substance to the magnetizing force producing…
  28. Who discovereda the relationship between magnetism and electricity that serves as the foundation for…
  29. The flux density in an air-cored coil is 10^-3 Wb/m^2. With a cast iron core of relative permeability…
  30. One weber of flux is equal to _______ magnetic lines of force.