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A factor used to correct for the electrostatic forces of the more distant ions in an ionic solid.

A. Avogadro's number

B. Planck's constant

C. Boltzmann's constant

D. Madelung constant

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  1. The force between two magnetic poles is _____ their poles strength.
  2. If two similar charges 1 coulomb each are placed 1 m apart in aira then the force of repulsion is
  3. How many neutrons does a copper atom have?
  4. A one cubic cm of copper has how many free electrons at room temperature?
  5. The B-H curve for ________ is a straight line passing through the origin.
  6. The ratio of the total flux (flux in iron path) to the useful flux (flux in air gap)
  7. The phenomenon that when an electric current passes through an anisotropic crystala there is an absorption…
  8. The temperature coefficient of resistance of insulators is
  9. The unit of electrical energy is
  10. Theory of ferromagnetic phenomena which assumes each atom is a permanent magnet which can turn freely…
  11. Materials whose permeabilities are slightly greater than that of free space
  12. The force between two magnetic poles is _______ their pole strengths.
  13. If the right handed bottle-opener cork screw is assumed to be along the conductor so as to advance in…
  14. The emf produced in a wire by its motion across a magnetic field does not depend upon the
  15. A negative ion results when an atom gains an additional
  16. Residual magnetism refers to the flux densitya which exists in the iron core when the magnetic field…
  17. Permeability means
  18. Paramagnetic substance has a relative permeability of
  19. How many electrons are needed in the valence orbit to give a material's stability?
  20. Who developed the electromagnetic theory of light in 1862?
  21. What is another name for relative permittivity?
  22. The force which set ups or tends to set up magnetic flux in a magnetic circuit
  23. Magnetic intensity is a
  24. Whenever a conductor cuts magnetic fluxa an emf is induced in it. This is known as
  25. Gases whose particles are charged are known as
  26. The magnetic field inside a solenoid
  27. The B-H curve of ________ is not a straight line.
  28. An effect which is generally used in the gausameter to measure flux density.
  29. A length of wire has a resistance of 10 ohms. What is the resistance of a wire of the same material…
  30. The ability of a mechanically stressed ferromagnetic wire to recognize rapid switching of magnetization…