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All matters (gasa liquid and solid) are composed of

A. Neutrons

B. Particles

C. Electrons

D. Atoms

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  1. A germanium atom has an atomic weight of72. How many neutrons are there?
  2. Electrons at the outer shell are called
  3. Materials that have very high permeabilities (hundreds and even thousands times of that of free space)
  4. Formed when there exist distant electronic interactions between (opposite) charges present in the neighboring…
  5. When a wire loop is rotated in a magnetic field the direction of the induced emf changes one in every…
  6. A principle that states that only two electrons with different spins are allowed to exist in a given…
  7. The magnetic potential in a magnetic circuit can be measured in terms of
  8. The magnetic field of a bar magnet most closely resembles the magnetic field of
  9. What is used as the dielectric material in high voltage transformers?
  10. Defined as the ratio of the volume occupied by the atoms or ions in a unit cell divided by the volume…
  11. One ampere- turn is equivalent to _____ gilberts
  12. The emission of electrons from hot bodies is called
  13. One oersted (Oe) is equivalent to _____ Gb/cm.
  14. If the number of valence electrons of an atom is less than 4a then the substance is probably
  15. Electric field intensity is measured in
  16. The uncharged particles which have no effect on its atomic charge.
  17. Which of the following has the least number of valence electrons?
  18. A t/m is a unit of
  19. Theory of ferromagnetic phenomena which assumes each atom is a permanent magnet which can turn freely…
  20. What determines the value of the temperature coefficient of resistance of a material?
  21. What is the maximum number of electrons that can be accommodated in the last orbit of an atom?
  22. The reluctance of a magnetic circuit varies with
  23. The phenomenon that when an electric current passes through an anisotropic crystala there is an absorption…
  24. How many electrons are needed in the valence orbit to give a material's stability?
  25. A length of wire has a resistance of 10 ohms. What is the resistance of a wire of the same material…
  26. Whenever a flux inking a coil or current changesa an emf is induced in it. This is known as
  27. The amount of magnetizing force to counter balance the resid magnetic material is referred to as
  28. The magnitude of the induced emf in a coil is directly proportional to the rate of change of flux linkages.…
  29. The greater percentage of materials is _________.
  30. A law relating between the magnetic and electric susceptibilities and the absolute temperatures which…