All matters (gasa liquid and solid) are composed of

A. Neutrons

B. Particles

C. Electrons

D. Atoms

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  1. Hysteresis loss can be reduced by one of the following.
  2. One oersted (Oe) is equivalent to _____ Gb/cm.
  3. If two similar charges 1 coulomb each are placed 1 m apart in aira then the force of repulsion is
  4. Materials that have very high permeabilities (hundreds and even thousands times of that of free space)
  5. The magnetic flux through a wire loop in a magnetic field does not d
  6. Electric potential is a _______ quantity.
  7. If the number of valence electrons of an atom is less than 4a then the substance is probably
  8. The magnetic field of a magnetized iron bar when strongly heated
  9. The force between two magnetic poles is _______ their pole strengths.
  10. Who discovered that a current-carrying conductor would move when placed in a magnetic field?
  11. One coulomb of charge consists of ________ electrons.
  12. The force of attraction or repulsion between two magnetic poles is inversely proportional to the square…
  13. One of the solid structures in which the position of the atoms or ions are predetermined
  14. The core of a magnetic equipment uses a magnetic material with
  15. What is the SI unit of magnetic flux?
  16. Which of the following magnetic materials can be easily magnetized in both direction?
  17. Which of the following electric quantities is vector in character?
  18. The electrons in the last orbit of an atom are called _______ electrons.
  19. Why is it that the magnitude of magnetomotive force required for air gap is much greater than that required…
  20. What is the SI unit of specific resistance or resistivity?
  21. What is the measure of the density and sign of the electric charge at a point relative to that at some…
  22. States that the ratio of the thermal conductivity is proportional to the absolute temperature for all…
  23. Two similar polesa each 1Wba placed 1 m apart in air will experience a repulsive force of
  24. Steel is hard to magnetize because of its
  25. The unit of electrical energy is
  26. The physical motion resulting from the forces of magnetic fields is called
  27. The lagging effect between flux density of the material and the magne
  28. The force acting on a pole of 5 Wb is 25 N. What is the intensity of the magnetic field?
  29. The relative permeability of a magnetic material is 10^5. What is its permeability?
  30. The emf produced in a wire by its motion across a magnetic field does not depend upon the