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The property of a material which opposes the creation of magnetic flux in it

A. Resistance

B. Reluctance

C. Permeance

D. Conductance

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  1. The force between two magnetic poles is _____ their poles strength.
  2. Back emf refers to the
  3. Whenever a conductor cuts magnetic fluxa an emf is induced in it. This is known as
  4. A group of magnetically aligned atoms is called
  5. If the number of valence electrons of an atom is less than 4a then the substance is probably
  6. What is the measure of the density and sign of the electric charge at a point relative to that at some…
  7. The evaporation of electrons from a heated surface is called
  8. The magnitude of the induced emf in a coil is directly proportional to the rate of change of flux linkages.…
  9. Materials that have very high permeabilities (hundreds and even thousands times of that of free space)
  10. __________ is a substance of whose molecules consist of the same kind of atom.
  11. Residual magnetism refers to the flux densitya which exists in the iron core when the magnetic field…
  12. The electric field intensity between the parallel plate air capacitor is 20 N/C. If an insulating slab…
  13. The relative permeability of a magnetic material is 10^5. What is its permeability?
  14. If the number of valence electrons of an atom is less than 4a the substance is called
  15. Another term for corona discharge.
  16. Who discovered superconductivity in 1911?
  17. The amount of magnetizing force to counter balance the resid magnetic material is referred to as
  18. A law relating between the magnetic and electric susceptibilities and the absolute temperatures which…
  19. The ability of a material to conduct magnetic flux through it.
  20. Which of the following is used by permanent magnets as the magnetic material?
  21. A permanent magnet does not exert a force on
  22. A t/m is a unit of
  23. Who demonstrated that there are magnetic effects around every current-carrying conductor and that current-carrying…
  24. The core of a transformer heats up when its primary is fed from an ac source because of
  25. The ability of a mechanically stressed ferromagnetic wire to recognize rapid switching of magnetization…
  26. The resistance of a material is ____________ its area of cross-section.
  27. The unit of flux density is
  28. Who demonstrated the theory of electromagnetic induction in 1831?
  29. If you hold the conductor with right hand so that the stretched thumb points in the direction of the…
  30. Hipernik is an alloy containing __________ iron and __________ nickel.